39747640

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2503}}^1$

素因数の和:2911

約数の個数: 32

約数和(自身を含む): 89693280

約数和(自身を除く): 49945640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 2503, 3176, 3970, 5006, 7940, 10012, 12515, 15880, 20024, 25030, 50060, 100120, 993691, 1987382, 3974764, 4968455, 7949528, 9936910, 19873820, 39747640]

約数ペア:

[(1, 39747640), (2, 19873820), (4, 9936910), (5, 7949528), (8, 4968455), (10, 3974764), (20, 1987382), (40, 993691), (397, 100120), (794, 50060), (1588, 25030), (1985, 20024), (2503, 15880), (3176, 12515), (3970, 10012), (5006, 7940)]