21463280

素因数分解:

$2^4\times 5^1\times {\mathrm{268291}}^1$

素因数の和:268304

約数の個数: 20

約数和(自身を含む): 49902312

約数和(自身を除く): 28439032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 268291, 536582, 1073164, 1341455, 2146328, 2682910, 4292656, 5365820, 10731640, 21463280]

約数ペア:

[(1, 21463280), (2, 10731640), (4, 5365820), (5, 4292656), (8, 2682910), (10, 2146328), (16, 1341455), (20, 1073164), (40, 536582), (80, 268291)]