257603528

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{821}}^1$

素因数の和:1278

約数の個数: 64

約数和(自身を含む): 596574720

約数和(自身を除く): 338971192

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 431, 728, 821, 862, 1642, 1724, 3017, 3284, 3448, 5603, 5747, 6034, 6568, 10673, 11206, 11494, 12068, 21346, 22412, 22988, 24136, 39221, 42692, 44824, 45976, 74711, 78442, 85384, 149422, 156884, 298844, 313768, 353851, 597688, 707702, 1415404, 2476957, 2830808, 4600063, 4953914, 9200126, 9907828, 18400252, 19815656, 32200441, 36800504, 64400882, 128801764, 257603528]

約数ペア:

[(1, 257603528), (2, 128801764), (4, 64400882), (7, 36800504), (8, 32200441), (13, 19815656), (14, 18400252), (26, 9907828), (28, 9200126), (52, 4953914), (56, 4600063), (91, 2830808), (104, 2476957), (182, 1415404), (364, 707702), (431, 597688), (728, 353851), (821, 313768), (862, 298844), (1642, 156884), (1724, 149422), (3017, 85384), (3284, 78442), (3448, 74711), (5603, 45976), (5747, 44824), (6034, 42692), (6568, 39221), (10673, 24136), (11206, 22988), (11494, 22412), (12068, 21346)]