21051916

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18211}}^1$

素因数の和:18249

約数の個数: 18

約数和(自身を含む): 39137588

約数和(自身を除く): 18085672

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18211, 36422, 72844, 309587, 619174, 1238348, 5262979, 10525958, 21051916]

約数ペア:

[(1, 21051916), (2, 10525958), (4, 5262979), (17, 1238348), (34, 619174), (68, 309587), (289, 72844), (578, 36422), (1156, 18211)]