687645497

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1\times {\mathrm{521}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 876158208

約数和(自身を除く): 188512711

約数列:

[1, 7, 11, 61, 77, 281, 427, 521, 671, 1967, 3091, 3647, 4697, 5731, 17141, 21637, 31781, 40117, 119987, 146401, 188551, 222467, 349591, 1024807, 1319857, 1610411, 2447137, 8930461, 11272877, 62513227, 98235071, 687645497]

約数ペア:

[(1, 687645497), (7, 98235071), (11, 62513227), (61, 11272877), (77, 8930461), (281, 2447137), (427, 1610411), (521, 1319857), (671, 1024807), (1967, 349591), (3091, 222467), (3647, 188551), (4697, 146401), (5731, 119987), (17141, 40117), (21637, 31781)]