81261789

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 126382080

約数和(自身を除く): 45120291

約数列:

[1, 3, 7, 21, 109, 131, 271, 327, 393, 763, 813, 917, 1897, 2289, 2751, 5691, 14279, 29539, 35501, 42837, 88617, 99953, 106503, 206773, 248507, 299859, 620319, 745521, 3869609, 11608827, 27087263, 81261789]

約数ペア:

[(1, 81261789), (3, 27087263), (7, 11608827), (21, 3869609), (109, 745521), (131, 620319), (271, 299859), (327, 248507), (393, 206773), (763, 106503), (813, 99953), (917, 88617), (1897, 42837), (2289, 35501), (2751, 29539), (5691, 14279)]