19620804520

素因数分解:

$2^3\times 5^1\times {\mathrm{490520113}}^1$

素因数の和:490520124

約数の個数: 16

約数和(自身を含む): 44146810260

約数和(自身を除く): 24526005740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 490520113, 981040226, 1962080452, 2452600565, 3924160904, 4905201130, 9810402260, 19620804520]

約数ペア:

[(1, 19620804520), (2, 9810402260), (4, 4905201130), (5, 3924160904), (8, 2452600565), (10, 1962080452), (20, 981040226), (40, 490520113)]