20774960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8377}}^1$

素因数の和:8421

約数の個数: 40

約数和(自身を含む): 49865856

約数和(自身を除く): 29090896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8377, 16754, 33508, 41885, 67016, 83770, 134032, 167540, 259687, 335080, 519374, 670160, 1038748, 1298435, 2077496, 2596870, 4154992, 5193740, 10387480, 20774960]

約数ペア:

[(1, 20774960), (2, 10387480), (4, 5193740), (5, 4154992), (8, 2596870), (10, 2077496), (16, 1298435), (20, 1038748), (31, 670160), (40, 519374), (62, 335080), (80, 259687), (124, 167540), (155, 134032), (248, 83770), (310, 67016), (496, 41885), (620, 33508), (1240, 16754), (2480, 8377)]