20430781280

素因数分解:

$2^5\times 5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{4091}}^1$

素因数の和:4147

約数の個数: 240

約数和(自身を含む): 60655274064

約数和(自身を除く): 40224492784

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 343, 364, 392, 416, 455, 490, 520, 560, 637, 686, 728, 784, 910, 980, 1040, 1120, 1274, 1372, 1456, 1568, 1715, 1820, 1960, 2080, 2401, 2548, 2744, 2912, 3185, 3430, 3640, 3920, 4091, 4459, 4802, 5096, 5488, 6370, 6860, 7280, 7840, 8182, 8918, 9604, 10192, 10976, 12005, 12740, 13720, 14560, 16364, 17836, 19208, 20384, 20455, 22295, 24010, 25480, 27440, 28637, 31213, 32728, 35672, 38416, 40910, 44590, 48020, 50960, 53183, 54880, 57274, 62426, 65456, 71344, 76832, 81820, 89180, 96040, 101920, 106366, 114548, 124852, 130912, 142688, 143185, 156065, 163640, 178360, 192080, 200459, 212732, 229096, 249704, 265915, 286370, 312130, 327280, 356720, 372281, 384160, 400918, 425464, 458192, 499408, 531830, 572740, 624260, 654560, 713440, 744562, 801836, 850928, 916384, 998816, 1002295, 1063660, 1145480, 1248520, 1403213, 1489124, 1603672, 1701856, 1861405, 2004590, 2127320, 2290960, 2497040, 2605967, 2806426, 2978248, 3207344, 3722810, 4009180, 4254640, 4581920, 4994080, 5211934, 5612852, 5956496, 6414688, 7016065, 7445620, 8018360, 8509280, 9822491, 10423868, 11225704, 11912992, 13029835, 14032130, 14891240, 16036720, 18241769, 19644982, 20847736, 22451408, 26059670, 28064260, 29782480, 32073440, 36483538, 39289964, 41695472, 44902816, 49112455, 52119340, 56128520, 59564960, 72967076, 78579928, 83390944, 91208845, 98224910, 104238680, 112257040, 127692383, 145934152, 157159856, 182417690, 196449820, 208477360, 224514080, 255384766, 291868304, 314319712, 364835380, 392899640, 416954720, 510769532, 583736608, 638461915, 729670760, 785799280, 1021539064, 1276923830, 1459341520, 1571598560, 2043078128, 2553847660, 2918683040, 4086156256, 5107695320, 10215390640, 20430781280]

約数ペア:

[(1, 20430781280), (2, 10215390640), (4, 5107695320), (5, 4086156256), (7, 2918683040), (8, 2553847660), (10, 2043078128), (13, 1571598560), (14, 1459341520), (16, 1276923830), (20, 1021539064), (26, 785799280), (28, 729670760), (32, 638461915), (35, 583736608), (40, 510769532), (49, 416954720), (52, 392899640), (56, 364835380), (65, 314319712), (70, 291868304), (80, 255384766), (91, 224514080), (98, 208477360), (104, 196449820), (112, 182417690), (130, 157159856), (140, 145934152), (160, 127692383), (182, 112257040), (196, 104238680), (208, 98224910), (224, 91208845), (245, 83390944), (260, 78579928), (280, 72967076), (343, 59564960), (364, 56128520), (392, 52119340), (416, 49112455), (455, 44902816), (490, 41695472), (520, 39289964), (560, 36483538), (637, 32073440), (686, 29782480), (728, 28064260), (784, 26059670), (910, 22451408), (980, 20847736), (1040, 19644982), (1120, 18241769), (1274, 16036720), (1372, 14891240), (1456, 14032130), (1568, 13029835), (1715, 11912992), (1820, 11225704), (1960, 10423868), (2080, 9822491), (2401, 8509280), (2548, 8018360), (2744, 7445620), (2912, 7016065), (3185, 6414688), (3430, 5956496), (3640, 5612852), (3920, 5211934), (4091, 4994080), (4459, 4581920), (4802, 4254640), (5096, 4009180), (5488, 3722810), (6370, 3207344), (6860, 2978248), (7280, 2806426), (7840, 2605967), (8182, 2497040), (8918, 2290960), (9604, 2127320), (10192, 2004590), (10976, 1861405), (12005, 1701856), (12740, 1603672), (13720, 1489124), (14560, 1403213), (16364, 1248520), (17836, 1145480), (19208, 1063660), (20384, 1002295), (20455, 998816), (22295, 916384), (24010, 850928), (25480, 801836), (27440, 744562), (28637, 713440), (31213, 654560), (32728, 624260), (35672, 572740), (38416, 531830), (40910, 499408), (44590, 458192), (48020, 425464), (50960, 400918), (53183, 384160), (54880, 372281), (57274, 356720), (62426, 327280), (65456, 312130), (71344, 286370), (76832, 265915), (81820, 249704), (89180, 229096), (96040, 212732), (101920, 200459), (106366, 192080), (114548, 178360), (124852, 163640), (130912, 156065), (142688, 143185)]