257315940

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{22691}}^1$

素因数の和:22719

約数の個数: 120

約数和(自身を含む): 922565952

約数和(自身を除く): 665250012

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 11340, 22691, 45382, 68073, 90764, 113455, 136146, 158837, 204219, 226910, 272292, 317674, 340365, 408438, 453820, 476511, 612657, 635348, 680730, 794185, 816876, 953022, 1021095, 1225314, 1361460, 1429533, 1588370, 1837971, 1906044, 2042190, 2382555, 2450628, 2859066, 3063285, 3176740, 3675942, 4084380, 4288599, 4765110, 5718132, 6126570, 7147665, 7351884, 8577198, 9189855, 9530220, 12253140, 12865797, 14295330, 17154396, 18379710, 21442995, 25731594, 28590660, 36759420, 42885990, 51463188, 64328985, 85771980, 128657970, 257315940]

約数ペア:

[(1, 257315940), (2, 128657970), (3, 85771980), (4, 64328985), (5, 51463188), (6, 42885990), (7, 36759420), (9, 28590660), (10, 25731594), (12, 21442995), (14, 18379710), (15, 17154396), (18, 14295330), (20, 12865797), (21, 12253140), (27, 9530220), (28, 9189855), (30, 8577198), (35, 7351884), (36, 7147665), (42, 6126570), (45, 5718132), (54, 4765110), (60, 4288599), (63, 4084380), (70, 3675942), (81, 3176740), (84, 3063285), (90, 2859066), (105, 2450628), (108, 2382555), (126, 2042190), (135, 1906044), (140, 1837971), (162, 1588370), (180, 1429533), (189, 1361460), (210, 1225314), (252, 1021095), (270, 953022), (315, 816876), (324, 794185), (378, 680730), (405, 635348), (420, 612657), (540, 476511), (567, 453820), (630, 408438), (756, 340365), (810, 317674), (945, 272292), (1134, 226910), (1260, 204219), (1620, 158837), (1890, 136146), (2268, 113455), (2835, 90764), (3780, 68073), (5670, 45382), (11340, 22691)]