20687974

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{1747}}^1$

素因数の和:1971

約数の個数: 16

約数和(自身を含む): 32219136

約数和(自身を除く): 11531162

約数列:

[1, 2, 31, 62, 191, 382, 1747, 3494, 5921, 11842, 54157, 108314, 333677, 667354, 10343987, 20687974]

約数ペア:

[(1, 20687974), (2, 10343987), (31, 667354), (62, 333677), (191, 108314), (382, 54157), (1747, 11842), (3494, 5921)]