261638520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:310

約数の個数: 256

約数和(自身を含む): 938649600

約数和(自身を除く): 677011080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 79, 88, 104, 110, 120, 130, 132, 143, 156, 158, 165, 193, 195, 220, 237, 260, 264, 286, 312, 316, 330, 386, 390, 395, 429, 440, 474, 520, 572, 579, 632, 660, 715, 772, 780, 790, 858, 869, 948, 965, 1027, 1144, 1158, 1185, 1320, 1430, 1544, 1560, 1580, 1716, 1738, 1896, 1930, 2054, 2123, 2145, 2316, 2370, 2509, 2607, 2860, 2895, 3081, 3160, 3432, 3476, 3860, 4108, 4246, 4290, 4345, 4632, 4740, 5018, 5135, 5214, 5720, 5790, 6162, 6369, 6952, 7527, 7720, 8216, 8492, 8580, 8690, 9480, 10036, 10270, 10428, 10615, 11297, 11580, 12324, 12545, 12738, 13035, 15054, 15247, 15405, 16984, 17160, 17380, 20072, 20540, 20856, 21230, 22594, 23160, 24648, 25090, 25476, 26070, 27599, 30108, 30494, 30810, 31845, 33891, 34760, 37635, 41080, 42460, 45188, 45741, 50180, 50952, 52140, 55198, 56485, 60216, 60988, 61620, 63690, 67782, 75270, 76235, 82797, 84920, 90376, 91482, 100360, 104280, 110396, 112970, 121976, 123240, 127380, 135564, 137995, 150540, 152470, 165594, 167717, 169455, 182964, 198211, 220792, 225940, 228705, 254760, 271128, 275990, 301080, 304940, 331188, 335434, 338910, 365928, 396422, 413985, 451880, 457410, 503151, 551980, 594633, 609880, 662376, 670868, 677820, 792844, 827970, 838585, 914820, 991055, 1006302, 1103960, 1189266, 1341736, 1355640, 1585688, 1655940, 1677170, 1829640, 1982110, 2012604, 2180321, 2378532, 2515755, 2973165, 3311880, 3354340, 3964220, 4025208, 4360642, 4757064, 5031510, 5946330, 6540963, 6708680, 7928440, 8721284, 10063020, 10901605, 11892660, 13081926, 17442568, 20126040, 21803210, 23785320, 26163852, 32704815, 43606420, 52327704, 65409630, 87212840, 130819260, 261638520]

約数ペア:

[(1, 261638520), (2, 130819260), (3, 87212840), (4, 65409630), (5, 52327704), (6, 43606420), (8, 32704815), (10, 26163852), (11, 23785320), (12, 21803210), (13, 20126040), (15, 17442568), (20, 13081926), (22, 11892660), (24, 10901605), (26, 10063020), (30, 8721284), (33, 7928440), (39, 6708680), (40, 6540963), (44, 5946330), (52, 5031510), (55, 4757064), (60, 4360642), (65, 4025208), (66, 3964220), (78, 3354340), (79, 3311880), (88, 2973165), (104, 2515755), (110, 2378532), (120, 2180321), (130, 2012604), (132, 1982110), (143, 1829640), (156, 1677170), (158, 1655940), (165, 1585688), (193, 1355640), (195, 1341736), (220, 1189266), (237, 1103960), (260, 1006302), (264, 991055), (286, 914820), (312, 838585), (316, 827970), (330, 792844), (386, 677820), (390, 670868), (395, 662376), (429, 609880), (440, 594633), (474, 551980), (520, 503151), (572, 457410), (579, 451880), (632, 413985), (660, 396422), (715, 365928), (772, 338910), (780, 335434), (790, 331188), (858, 304940), (869, 301080), (948, 275990), (965, 271128), (1027, 254760), (1144, 228705), (1158, 225940), (1185, 220792), (1320, 198211), (1430, 182964), (1544, 169455), (1560, 167717), (1580, 165594), (1716, 152470), (1738, 150540), (1896, 137995), (1930, 135564), (2054, 127380), (2123, 123240), (2145, 121976), (2316, 112970), (2370, 110396), (2509, 104280), (2607, 100360), (2860, 91482), (2895, 90376), (3081, 84920), (3160, 82797), (3432, 76235), (3476, 75270), (3860, 67782), (4108, 63690), (4246, 61620), (4290, 60988), (4345, 60216), (4632, 56485), (4740, 55198), (5018, 52140), (5135, 50952), (5214, 50180), (5720, 45741), (5790, 45188), (6162, 42460), (6369, 41080), (6952, 37635), (7527, 34760), (7720, 33891), (8216, 31845), (8492, 30810), (8580, 30494), (8690, 30108), (9480, 27599), (10036, 26070), (10270, 25476), (10428, 25090), (10615, 24648), (11297, 23160), (11580, 22594), (12324, 21230), (12545, 20856), (12738, 20540), (13035, 20072), (15054, 17380), (15247, 17160), (15405, 16984)]