81399998

素因数分解:

$2^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1\times {\mathrm{521}}^1$

素因数の和:1123

約数の個数: 16

約数和(自身を含む): 123275520

約数和(自身を除く): 41875522

約数列:

[1, 2, 191, 382, 409, 521, 818, 1042, 78119, 99511, 156238, 199022, 213089, 426178, 40699999, 81399998]

約数ペア:

[(1, 81399998), (2, 40699999), (191, 426178), (382, 213089), (409, 199022), (521, 156238), (818, 99511), (1042, 78119)]