64390390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{727}}^1$

素因数の和:1272

約数の個数: 32

約数和(自身を含む): 123125184

約数和(自身を除く): 58734794

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 521, 727, 1042, 1454, 2605, 3635, 5210, 7270, 8857, 12359, 17714, 24718, 44285, 61795, 88570, 123590, 378767, 757534, 1893835, 3787670, 6439039, 12878078, 32195195, 64390390]

約数ペア:

[(1, 64390390), (2, 32195195), (5, 12878078), (10, 6439039), (17, 3787670), (34, 1893835), (85, 757534), (170, 378767), (521, 123590), (727, 88570), (1042, 61795), (1454, 44285), (2605, 24718), (3635, 17714), (5210, 12359), (7270, 8857)]