620021320

素因数分解:

$2^3\times 5^1\times {\mathrm{15500533}}^1$

素因数の和:15500544

約数の個数: 16

約数和(自身を含む): 1395048060

約数和(自身を除く): 775026740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 15500533, 31001066, 62002132, 77502665, 124004264, 155005330, 310010660, 620021320]

約数ペア:

[(1, 620021320), (2, 310010660), (4, 155005330), (5, 124004264), (8, 77502665), (10, 62002132), (20, 31001066), (40, 15500533)]