21497744

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8243}}^1$

素因数の和:8414

約数の個数: 20

約数和(自身を含む): 41912496

約数和(自身を除く): 20414752

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8243, 16486, 32972, 65944, 131888, 1343609, 2687218, 5374436, 10748872, 21497744]

約数ペア:

[(1, 21497744), (2, 10748872), (4, 5374436), (8, 2687218), (16, 1343609), (163, 131888), (326, 65944), (652, 32972), (1304, 16486), (2608, 8243)]