81129728

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{10223}}^1$

素因数の和:10270

約数の個数: 36

約数和(自身を含む): 167182848

約数和(自身を除く): 86053120

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 3968, 7936, 10223, 20446, 40892, 81784, 163568, 316913, 327136, 633826, 654272, 1267652, 1308544, 2535304, 2617088, 5070608, 10141216, 20282432, 40564864, 81129728]

約数ペア:

[(1, 81129728), (2, 40564864), (4, 20282432), (8, 10141216), (16, 5070608), (31, 2617088), (32, 2535304), (62, 1308544), (64, 1267652), (124, 654272), (128, 633826), (248, 327136), (256, 316913), (496, 163568), (992, 81784), (1984, 40892), (3968, 20446), (7936, 10223)]