19896280

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3797}}^1$

素因数の和:3939

約数の個数: 32

約数和(自身を含む): 45120240

約数和(自身を除く): 25223960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3797, 5240, 7594, 15188, 18985, 30376, 37970, 75940, 151880, 497407, 994814, 1989628, 2487035, 3979256, 4974070, 9948140, 19896280]

約数ペア:

[(1, 19896280), (2, 9948140), (4, 4974070), (5, 3979256), (8, 2487035), (10, 1989628), (20, 994814), (40, 497407), (131, 151880), (262, 75940), (524, 37970), (655, 30376), (1048, 18985), (1310, 15188), (2620, 7594), (3797, 5240)]