81278788

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{233}}^1\times {\mathrm{2357}}^1$

素因数の和:2631

約数の個数: 24

約数和(自身を含む): 146771352

約数和(自身を除く): 65492564

約数列:

[1, 2, 4, 37, 74, 148, 233, 466, 932, 2357, 4714, 8621, 9428, 17242, 34484, 87209, 174418, 348836, 549181, 1098362, 2196724, 20319697, 40639394, 81278788]

約数ペア:

[(1, 81278788), (2, 40639394), (4, 20319697), (37, 2196724), (74, 1098362), (148, 549181), (233, 348836), (466, 174418), (932, 87209), (2357, 34484), (4714, 17242), (8621, 9428)]