64720972

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{55987}}^1$

素因数の和:56025

約数の個数: 18

約数和(自身を含む): 120318212

約数和(自身を除く): 55597240

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 55987, 111974, 223948, 951779, 1903558, 3807116, 16180243, 32360486, 64720972]

約数ペア:

[(1, 64720972), (2, 32360486), (4, 16180243), (17, 3807116), (34, 1903558), (68, 951779), (289, 223948), (578, 111974), (1156, 55987)]