20123998040

素因数分解:

$2^3\times 5^1\times {\mathrm{503099951}}^1$

素因数の和:503099962

約数の個数: 16

約数和(自身を含む): 45278995680

約数和(自身を除く): 25154997640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503099951, 1006199902, 2012399804, 2515499755, 4024799608, 5030999510, 10061999020, 20123998040]

約数ペア:

[(1, 20123998040), (2, 10061999020), (4, 5030999510), (5, 4024799608), (8, 2515499755), (10, 2012399804), (20, 1006199902), (40, 503099951)]