21173720

素因数分解:

$2^3\times 5^1\times {\mathrm{529343}}^1$

素因数の和:529354

約数の個数: 16

約数和(自身を含む): 47640960

約数和(自身を除く): 26467240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529343, 1058686, 2117372, 2646715, 4234744, 5293430, 10586860, 21173720]

約数ペア:

[(1, 21173720), (2, 10586860), (4, 5293430), (5, 4234744), (8, 2646715), (10, 2117372), (20, 1058686), (40, 529343)]