640971240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{743}}^1$

素因数の和:856

約数の個数: 256

約数和(自身を含む): 2399846400

約数和(自身を除く): 1758875160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 79, 84, 91, 104, 105, 120, 130, 140, 156, 158, 168, 182, 195, 210, 237, 260, 273, 280, 312, 316, 364, 390, 395, 420, 455, 474, 520, 546, 553, 632, 728, 743, 780, 790, 840, 910, 948, 1027, 1092, 1106, 1185, 1365, 1486, 1560, 1580, 1659, 1820, 1896, 2054, 2184, 2212, 2229, 2370, 2730, 2765, 2972, 3081, 3160, 3318, 3640, 3715, 4108, 4424, 4458, 4740, 5135, 5201, 5460, 5530, 5944, 6162, 6636, 7189, 7430, 8216, 8295, 8916, 9480, 9659, 10270, 10402, 10920, 11060, 11145, 12324, 13272, 14378, 14860, 15405, 15603, 16590, 17832, 19318, 20540, 20804, 21567, 22120, 22290, 24648, 26005, 28756, 28977, 29720, 30810, 31206, 33180, 35945, 38636, 41080, 41608, 43134, 44580, 48295, 52010, 57512, 57954, 58697, 61620, 62412, 66360, 67613, 71890, 77272, 78015, 86268, 89160, 96590, 104020, 107835, 115908, 117394, 123240, 124824, 135226, 143780, 144885, 156030, 172536, 176091, 193180, 202839, 208040, 215670, 231816, 234788, 270452, 287560, 289770, 293485, 312060, 338065, 352182, 386360, 405678, 410879, 431340, 469576, 540904, 579540, 586970, 624120, 676130, 704364, 763061, 811356, 821758, 862680, 880455, 1014195, 1159080, 1173940, 1232637, 1352260, 1408728, 1526122, 1622712, 1643516, 1760910, 2028390, 2054395, 2289183, 2347880, 2465274, 2704520, 3052244, 3287032, 3521820, 3815305, 4056780, 4108790, 4578366, 4930548, 5341427, 6104488, 6163185, 7043640, 7630610, 8113560, 8217580, 9156732, 9861096, 10682854, 11445915, 12326370, 15261220, 16024281, 16435160, 18313464, 21365708, 22891830, 24652740, 26707135, 30522440, 32048562, 42731416, 45783660, 49305480, 53414270, 64097124, 80121405, 91567320, 106828540, 128194248, 160242810, 213657080, 320485620, 640971240]

約数ペア:

[(1, 640971240), (2, 320485620), (3, 213657080), (4, 160242810), (5, 128194248), (6, 106828540), (7, 91567320), (8, 80121405), (10, 64097124), (12, 53414270), (13, 49305480), (14, 45783660), (15, 42731416), (20, 32048562), (21, 30522440), (24, 26707135), (26, 24652740), (28, 22891830), (30, 21365708), (35, 18313464), (39, 16435160), (40, 16024281), (42, 15261220), (52, 12326370), (56, 11445915), (60, 10682854), (65, 9861096), (70, 9156732), (78, 8217580), (79, 8113560), (84, 7630610), (91, 7043640), (104, 6163185), (105, 6104488), (120, 5341427), (130, 4930548), (140, 4578366), (156, 4108790), (158, 4056780), (168, 3815305), (182, 3521820), (195, 3287032), (210, 3052244), (237, 2704520), (260, 2465274), (273, 2347880), (280, 2289183), (312, 2054395), (316, 2028390), (364, 1760910), (390, 1643516), (395, 1622712), (420, 1526122), (455, 1408728), (474, 1352260), (520, 1232637), (546, 1173940), (553, 1159080), (632, 1014195), (728, 880455), (743, 862680), (780, 821758), (790, 811356), (840, 763061), (910, 704364), (948, 676130), (1027, 624120), (1092, 586970), (1106, 579540), (1185, 540904), (1365, 469576), (1486, 431340), (1560, 410879), (1580, 405678), (1659, 386360), (1820, 352182), (1896, 338065), (2054, 312060), (2184, 293485), (2212, 289770), (2229, 287560), (2370, 270452), (2730, 234788), (2765, 231816), (2972, 215670), (3081, 208040), (3160, 202839), (3318, 193180), (3640, 176091), (3715, 172536), (4108, 156030), (4424, 144885), (4458, 143780), (4740, 135226), (5135, 124824), (5201, 123240), (5460, 117394), (5530, 115908), (5944, 107835), (6162, 104020), (6636, 96590), (7189, 89160), (7430, 86268), (8216, 78015), (8295, 77272), (8916, 71890), (9480, 67613), (9659, 66360), (10270, 62412), (10402, 61620), (10920, 58697), (11060, 57954), (11145, 57512), (12324, 52010), (13272, 48295), (14378, 44580), (14860, 43134), (15405, 41608), (15603, 41080), (16590, 38636), (17832, 35945), (19318, 33180), (20540, 31206), (20804, 30810), (21567, 29720), (22120, 28977), (22290, 28756), (24648, 26005)]