21813280

素因数分解:

$2^5\times 5^1\times {\mathrm{136333}}^1$

素因数の和:136348

約数の個数: 24

約数和(自身を含む): 51534252

約数和(自身を除く): 29720972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136333, 272666, 545332, 681665, 1090664, 1363330, 2181328, 2726660, 4362656, 5453320, 10906640, 21813280]

約数ペア:

[(1, 21813280), (2, 10906640), (4, 5453320), (5, 4362656), (8, 2726660), (10, 2181328), (16, 1363330), (20, 1090664), (32, 681665), (40, 545332), (80, 272666), (160, 136333)]