128515984

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{77983}}^1$

素因数の和:78094

約数の個数: 20

約数和(自身を含む): 251420416

約数和(自身を除く): 122904432

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 77983, 155966, 311932, 623864, 1247728, 8032249, 16064498, 32128996, 64257992, 128515984]

約数ペア:

[(1, 128515984), (2, 64257992), (4, 32128996), (8, 16064498), (16, 8032249), (103, 1247728), (206, 623864), (412, 311932), (824, 155966), (1648, 77983)]