25517960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1583}}^1$

素因数の和:1638

約数の個数: 64

約数和(自身を含む): 63866880

約数和(自身を除く): 38348920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1583, 1612, 2015, 3166, 3224, 4030, 6332, 7915, 8060, 12664, 15830, 16120, 20579, 31660, 41158, 49073, 63320, 82316, 98146, 102895, 164632, 196292, 205790, 245365, 392584, 411580, 490730, 637949, 823160, 981460, 1275898, 1962920, 2551796, 3189745, 5103592, 6379490, 12758980, 25517960]

約数ペア:

[(1, 25517960), (2, 12758980), (4, 6379490), (5, 5103592), (8, 3189745), (10, 2551796), (13, 1962920), (20, 1275898), (26, 981460), (31, 823160), (40, 637949), (52, 490730), (62, 411580), (65, 392584), (104, 245365), (124, 205790), (130, 196292), (155, 164632), (248, 102895), (260, 98146), (310, 82316), (403, 63320), (520, 49073), (620, 41158), (806, 31660), (1240, 20579), (1583, 16120), (1612, 15830), (2015, 12664), (3166, 8060), (3224, 7915), (4030, 6332)]