21000299020

素因数分解:

$2^2\times 5^1\times {\mathrm{30553}}^1\times {\mathrm{34367}}^1$

素因数の和:64929

約数の個数: 24

約数和(自身を含む): 44103354624

約数和(自身を除く): 23103055604

約数列:

[1, 2, 4, 5, 10, 20, 30553, 34367, 61106, 68734, 122212, 137468, 152765, 171835, 305530, 343670, 611060, 687340, 1050014951, 2100029902, 4200059804, 5250074755, 10500149510, 21000299020]

約数ペア:

[(1, 21000299020), (2, 10500149510), (4, 5250074755), (5, 4200059804), (10, 2100029902), (20, 1050014951), (30553, 687340), (34367, 611060), (61106, 343670), (68734, 305530), (122212, 171835), (137468, 152765)]