81604640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39233}}^1$

素因数の和:39261

約数の個数: 48

約数和(自身を含む): 207626328

約数和(自身を除く): 126021688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39233, 78466, 156932, 196165, 313864, 392330, 510029, 627728, 784660, 1020058, 1255456, 1569320, 2040116, 2550145, 3138640, 4080232, 5100290, 6277280, 8160464, 10200580, 16320928, 20401160, 40802320, 81604640]

約数ペア:

[(1, 81604640), (2, 40802320), (4, 20401160), (5, 16320928), (8, 10200580), (10, 8160464), (13, 6277280), (16, 5100290), (20, 4080232), (26, 3138640), (32, 2550145), (40, 2040116), (52, 1569320), (65, 1255456), (80, 1020058), (104, 784660), (130, 627728), (160, 510029), (208, 392330), (260, 313864), (416, 196165), (520, 156932), (1040, 78466), (2080, 39233)]