81380656

素因数分解:

$2^4\times 7^1\times {\mathrm{569}}^1\times {\mathrm{1277}}^1$

素因数の和:1861

約数の個数: 40

約数和(自身を含む): 180658080

約数和(自身を除く): 99277424

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 569, 1138, 1277, 2276, 2554, 3983, 4552, 5108, 7966, 8939, 9104, 10216, 15932, 17878, 20432, 31864, 35756, 63728, 71512, 143024, 726613, 1453226, 2906452, 5086291, 5812904, 10172582, 11625808, 20345164, 40690328, 81380656]

約数ペア:

[(1, 81380656), (2, 40690328), (4, 20345164), (7, 11625808), (8, 10172582), (14, 5812904), (16, 5086291), (28, 2906452), (56, 1453226), (112, 726613), (569, 143024), (1138, 71512), (1277, 63728), (2276, 35756), (2554, 31864), (3983, 20432), (4552, 17878), (5108, 15932), (7966, 10216), (8939, 9104)]