21765390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{4451}}^1$

素因数の和:4624

約数の個数: 32

約数和(自身を含む): 52569216

約数和(自身を除く): 30803826

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445, 4451, 4890, 8902, 13353, 22255, 26706, 44510, 66765, 133530, 725513, 1451026, 2176539, 3627565, 4353078, 7255130, 10882695, 21765390]

約数ペア:

[(1, 21765390), (2, 10882695), (3, 7255130), (5, 4353078), (6, 3627565), (10, 2176539), (15, 1451026), (30, 725513), (163, 133530), (326, 66765), (489, 44510), (815, 26706), (978, 22255), (1630, 13353), (2445, 8902), (4451, 4890)]