21786609

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{5531}}^1$

素因数の和:5648

約数の個数: 16

約数和(自身を含む): 31598784

約数和(自身を除く): 9812175

約数列:

[1, 3, 13, 39, 101, 303, 1313, 3939, 5531, 16593, 71903, 215709, 558631, 1675893, 7262203, 21786609]

約数ペア:

[(1, 21786609), (3, 7262203), (13, 1675893), (39, 558631), (101, 215709), (303, 71903), (1313, 16593), (3939, 5531)]