1978394020

素因数分解:

$2^2\times 5^1\times {\mathrm{1487}}^1\times {\mathrm{66523}}^1$

素因数の和:68019

約数の個数: 24

約数和(自身を含む): 4157483904

約数和(自身を除く): 2179089884

約数列:

[1, 2, 4, 5, 10, 20, 1487, 2974, 5948, 7435, 14870, 29740, 66523, 133046, 266092, 332615, 665230, 1330460, 98919701, 197839402, 395678804, 494598505, 989197010, 1978394020]

約数ペア:

[(1, 1978394020), (2, 989197010), (4, 494598505), (5, 395678804), (10, 197839402), (20, 98919701), (1487, 1330460), (2974, 665230), (5948, 332615), (7435, 266092), (14870, 133046), (29740, 66523)]