19797960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 256

約数和(自身を含む): 76608000

約数和(自身を除く): 56810040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 37, 39, 40, 42, 49, 52, 56, 60, 65, 70, 74, 78, 84, 91, 98, 104, 105, 111, 120, 130, 140, 147, 148, 156, 168, 182, 185, 195, 196, 210, 222, 245, 259, 260, 273, 280, 294, 296, 312, 343, 364, 370, 390, 392, 420, 444, 455, 481, 490, 518, 520, 546, 555, 588, 637, 686, 728, 735, 740, 777, 780, 840, 888, 910, 962, 980, 1029, 1036, 1092, 1110, 1176, 1274, 1295, 1365, 1372, 1443, 1470, 1480, 1554, 1560, 1715, 1813, 1820, 1911, 1924, 1960, 2058, 2072, 2184, 2220, 2405, 2548, 2590, 2730, 2744, 2886, 2940, 3108, 3185, 3367, 3430, 3626, 3640, 3822, 3848, 3885, 4116, 4440, 4459, 4810, 5096, 5145, 5180, 5439, 5460, 5772, 5880, 6216, 6370, 6734, 6860, 7215, 7252, 7644, 7770, 8232, 8918, 9065, 9555, 9620, 10101, 10290, 10360, 10878, 10920, 11544, 12691, 12740, 13377, 13468, 13720, 14430, 14504, 15288, 15540, 16835, 17836, 18130, 19110, 19240, 20202, 20580, 21756, 22295, 23569, 25382, 25480, 26754, 26936, 27195, 28860, 31080, 33670, 35672, 36260, 38073, 38220, 40404, 41160, 43512, 44590, 47138, 50505, 50764, 53508, 54390, 57720, 63455, 66885, 67340, 70707, 72520, 76146, 76440, 80808, 89180, 94276, 101010, 101528, 107016, 108780, 117845, 126910, 133770, 134680, 141414, 152292, 164983, 178360, 188552, 190365, 202020, 217560, 235690, 253820, 267540, 282828, 304584, 329966, 353535, 380730, 404040, 471380, 494949, 507640, 535080, 565656, 659932, 707070, 761460, 824915, 942760, 989898, 1319864, 1414140, 1522920, 1649830, 1979796, 2474745, 2828280, 3299660, 3959592, 4949490, 6599320, 9898980, 19797960]

約数ペア:

[(1, 19797960), (2, 9898980), (3, 6599320), (4, 4949490), (5, 3959592), (6, 3299660), (7, 2828280), (8, 2474745), (10, 1979796), (12, 1649830), (13, 1522920), (14, 1414140), (15, 1319864), (20, 989898), (21, 942760), (24, 824915), (26, 761460), (28, 707070), (30, 659932), (35, 565656), (37, 535080), (39, 507640), (40, 494949), (42, 471380), (49, 404040), (52, 380730), (56, 353535), (60, 329966), (65, 304584), (70, 282828), (74, 267540), (78, 253820), (84, 235690), (91, 217560), (98, 202020), (104, 190365), (105, 188552), (111, 178360), (120, 164983), (130, 152292), (140, 141414), (147, 134680), (148, 133770), (156, 126910), (168, 117845), (182, 108780), (185, 107016), (195, 101528), (196, 101010), (210, 94276), (222, 89180), (245, 80808), (259, 76440), (260, 76146), (273, 72520), (280, 70707), (294, 67340), (296, 66885), (312, 63455), (343, 57720), (364, 54390), (370, 53508), (390, 50764), (392, 50505), (420, 47138), (444, 44590), (455, 43512), (481, 41160), (490, 40404), (518, 38220), (520, 38073), (546, 36260), (555, 35672), (588, 33670), (637, 31080), (686, 28860), (728, 27195), (735, 26936), (740, 26754), (777, 25480), (780, 25382), (840, 23569), (888, 22295), (910, 21756), (962, 20580), (980, 20202), (1029, 19240), (1036, 19110), (1092, 18130), (1110, 17836), (1176, 16835), (1274, 15540), (1295, 15288), (1365, 14504), (1372, 14430), (1443, 13720), (1470, 13468), (1480, 13377), (1554, 12740), (1560, 12691), (1715, 11544), (1813, 10920), (1820, 10878), (1911, 10360), (1924, 10290), (1960, 10101), (2058, 9620), (2072, 9555), (2184, 9065), (2220, 8918), (2405, 8232), (2548, 7770), (2590, 7644), (2730, 7252), (2744, 7215), (2886, 6860), (2940, 6734), (3108, 6370), (3185, 6216), (3367, 5880), (3430, 5772), (3626, 5460), (3640, 5439), (3822, 5180), (3848, 5145), (3885, 5096), (4116, 4810), (4440, 4459)]