19675664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72337}}^1$

素因数の和:72362

約数の個数: 20

約数和(自身を含む): 40364604

約数和(自身を除く): 20688940

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72337, 144674, 289348, 578696, 1157392, 1229729, 2459458, 4918916, 9837832, 19675664]

約数ペア:

[(1, 19675664), (2, 9837832), (4, 4918916), (8, 2459458), (16, 1229729), (17, 1157392), (34, 578696), (68, 289348), (136, 144674), (272, 72337)]