21581653

素因数分解:

${\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{1409}}^1$

素因数の和:1496

約数の個数: 12

約数和(自身を含む): 23374980

約数和(自身を除く): 1793327

約数列:

[1, 17, 53, 289, 901, 1409, 15317, 23953, 74677, 407201, 1269509, 21581653]

約数ペア:

[(1, 21581653), (17, 1269509), (53, 407201), (289, 74677), (901, 23953), (1409, 15317)]