81421080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 256

約数和(自身を含む): 287884800

約数和(自身を除く): 206463720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 41, 52, 57, 60, 65, 67, 76, 78, 82, 95, 104, 114, 120, 123, 130, 134, 152, 156, 164, 190, 195, 201, 205, 228, 246, 247, 260, 268, 285, 312, 328, 335, 380, 390, 402, 410, 456, 492, 494, 520, 533, 536, 570, 615, 670, 741, 760, 779, 780, 804, 820, 871, 984, 988, 1005, 1066, 1140, 1230, 1235, 1273, 1340, 1482, 1558, 1560, 1599, 1608, 1640, 1742, 1976, 2010, 2132, 2280, 2337, 2460, 2470, 2546, 2613, 2665, 2680, 2747, 2964, 3116, 3198, 3484, 3705, 3819, 3895, 4020, 4264, 4355, 4674, 4920, 4940, 5092, 5226, 5330, 5494, 5928, 6232, 6365, 6396, 6968, 7410, 7638, 7790, 7995, 8040, 8241, 8710, 9348, 9880, 10127, 10184, 10452, 10660, 10988, 11685, 12730, 12792, 13065, 13735, 14820, 15276, 15580, 15990, 16482, 16549, 17420, 18696, 19095, 20254, 20904, 21320, 21976, 23370, 25460, 26130, 27470, 29640, 30381, 30552, 31160, 31980, 32964, 33098, 34840, 35711, 38190, 40508, 41205, 46740, 49647, 50635, 50920, 52193, 52260, 54940, 60762, 63960, 65928, 66196, 71422, 76380, 81016, 82410, 82745, 93480, 99294, 101270, 104386, 104520, 107133, 109880, 121524, 132392, 142844, 151905, 152760, 156579, 164820, 165490, 178555, 198588, 202540, 208772, 214266, 243048, 248235, 260965, 285688, 303810, 313158, 329640, 330980, 357110, 397176, 405080, 417544, 428532, 496470, 521930, 535665, 607620, 626316, 661960, 678509, 714220, 782895, 857064, 992940, 1043860, 1071330, 1215240, 1252632, 1357018, 1428440, 1565790, 1985880, 2035527, 2087720, 2142660, 2714036, 3131580, 3392545, 4071054, 4285320, 5428072, 6263160, 6785090, 8142108, 10177635, 13570180, 16284216, 20355270, 27140360, 40710540, 81421080]

約数ペア:

[(1, 81421080), (2, 40710540), (3, 27140360), (4, 20355270), (5, 16284216), (6, 13570180), (8, 10177635), (10, 8142108), (12, 6785090), (13, 6263160), (15, 5428072), (19, 4285320), (20, 4071054), (24, 3392545), (26, 3131580), (30, 2714036), (38, 2142660), (39, 2087720), (40, 2035527), (41, 1985880), (52, 1565790), (57, 1428440), (60, 1357018), (65, 1252632), (67, 1215240), (76, 1071330), (78, 1043860), (82, 992940), (95, 857064), (104, 782895), (114, 714220), (120, 678509), (123, 661960), (130, 626316), (134, 607620), (152, 535665), (156, 521930), (164, 496470), (190, 428532), (195, 417544), (201, 405080), (205, 397176), (228, 357110), (246, 330980), (247, 329640), (260, 313158), (268, 303810), (285, 285688), (312, 260965), (328, 248235), (335, 243048), (380, 214266), (390, 208772), (402, 202540), (410, 198588), (456, 178555), (492, 165490), (494, 164820), (520, 156579), (533, 152760), (536, 151905), (570, 142844), (615, 132392), (670, 121524), (741, 109880), (760, 107133), (779, 104520), (780, 104386), (804, 101270), (820, 99294), (871, 93480), (984, 82745), (988, 82410), (1005, 81016), (1066, 76380), (1140, 71422), (1230, 66196), (1235, 65928), (1273, 63960), (1340, 60762), (1482, 54940), (1558, 52260), (1560, 52193), (1599, 50920), (1608, 50635), (1640, 49647), (1742, 46740), (1976, 41205), (2010, 40508), (2132, 38190), (2280, 35711), (2337, 34840), (2460, 33098), (2470, 32964), (2546, 31980), (2613, 31160), (2665, 30552), (2680, 30381), (2747, 29640), (2964, 27470), (3116, 26130), (3198, 25460), (3484, 23370), (3705, 21976), (3819, 21320), (3895, 20904), (4020, 20254), (4264, 19095), (4355, 18696), (4674, 17420), (4920, 16549), (4940, 16482), (5092, 15990), (5226, 15580), (5330, 15276), (5494, 14820), (5928, 13735), (6232, 13065), (6365, 12792), (6396, 12730), (6968, 11685), (7410, 10988), (7638, 10660), (7790, 10452), (7995, 10184), (8040, 10127), (8241, 9880), (8710, 9348)]