261353040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:637

約数の個数: 160

約数和(自身を含む): 878860416

約数和(自身を除く): 617507376

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 211, 240, 260, 312, 390, 397, 422, 520, 624, 633, 780, 794, 844, 1040, 1055, 1191, 1266, 1560, 1588, 1688, 1985, 2110, 2382, 2532, 2743, 3120, 3165, 3176, 3376, 3970, 4220, 4764, 5064, 5161, 5486, 5955, 6330, 6352, 7940, 8229, 8440, 9528, 10128, 10322, 10972, 11910, 12660, 13715, 15483, 15880, 16458, 16880, 19056, 20644, 21944, 23820, 25320, 25805, 27430, 30966, 31760, 32916, 41145, 41288, 43888, 47640, 50640, 51610, 54860, 61932, 65832, 77415, 82290, 82576, 83767, 95280, 103220, 109720, 123864, 131664, 154830, 164580, 167534, 206440, 219440, 247728, 251301, 309660, 329160, 335068, 412880, 418835, 502602, 619320, 658320, 670136, 837670, 1005204, 1088971, 1238640, 1256505, 1340272, 1675340, 2010408, 2177942, 2513010, 3266913, 3350680, 4020816, 4355884, 5026020, 5444855, 6533826, 6701360, 8711768, 10052040, 10889710, 13067652, 16334565, 17423536, 20104080, 21779420, 26135304, 32669130, 43558840, 52270608, 65338260, 87117680, 130676520, 261353040]

約数ペア:

[(1, 261353040), (2, 130676520), (3, 87117680), (4, 65338260), (5, 52270608), (6, 43558840), (8, 32669130), (10, 26135304), (12, 21779420), (13, 20104080), (15, 17423536), (16, 16334565), (20, 13067652), (24, 10889710), (26, 10052040), (30, 8711768), (39, 6701360), (40, 6533826), (48, 5444855), (52, 5026020), (60, 4355884), (65, 4020816), (78, 3350680), (80, 3266913), (104, 2513010), (120, 2177942), (130, 2010408), (156, 1675340), (195, 1340272), (208, 1256505), (211, 1238640), (240, 1088971), (260, 1005204), (312, 837670), (390, 670136), (397, 658320), (422, 619320), (520, 502602), (624, 418835), (633, 412880), (780, 335068), (794, 329160), (844, 309660), (1040, 251301), (1055, 247728), (1191, 219440), (1266, 206440), (1560, 167534), (1588, 164580), (1688, 154830), (1985, 131664), (2110, 123864), (2382, 109720), (2532, 103220), (2743, 95280), (3120, 83767), (3165, 82576), (3176, 82290), (3376, 77415), (3970, 65832), (4220, 61932), (4764, 54860), (5064, 51610), (5161, 50640), (5486, 47640), (5955, 43888), (6330, 41288), (6352, 41145), (7940, 32916), (8229, 31760), (8440, 30966), (9528, 27430), (10128, 25805), (10322, 25320), (10972, 23820), (11910, 21944), (12660, 20644), (13715, 19056), (15483, 16880), (15880, 16458)]