920030120

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{35771}}^1$

素因数の和:36425

約数の個数: 32

約数和(自身を含む): 2073345120

約数和(自身を除く): 1153315000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 25720, 35771, 71542, 143084, 178855, 286168, 357710, 715420, 1430840, 23000753, 46001506, 92003012, 115003765, 184006024, 230007530, 460015060, 920030120]

約数ペア:

[(1, 920030120), (2, 460015060), (4, 230007530), (5, 184006024), (8, 115003765), (10, 92003012), (20, 46001506), (40, 23000753), (643, 1430840), (1286, 715420), (2572, 357710), (3215, 286168), (5144, 178855), (6430, 143084), (12860, 71542), (25720, 35771)]