81687256

素因数分解:

$2^3\times 7^1\times {\mathrm{691}}^1\times {\mathrm{2111}}^1$

素因数の和:2815

約数の個数: 32

約数和(自身を含む): 175380480

約数和(自身を除く): 93693224

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 691, 1382, 2111, 2764, 4222, 4837, 5528, 8444, 9674, 14777, 16888, 19348, 29554, 38696, 59108, 118216, 1458701, 2917402, 5834804, 10210907, 11669608, 20421814, 40843628, 81687256]

約数ペア:

[(1, 81687256), (2, 40843628), (4, 20421814), (7, 11669608), (8, 10210907), (14, 5834804), (28, 2917402), (56, 1458701), (691, 118216), (1382, 59108), (2111, 38696), (2764, 29554), (4222, 19348), (4837, 16888), (5528, 14777), (8444, 9674)]