19975240

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{887}}^1$

素因数の和:1461

約数の個数: 32

約数和(自身を含む): 45074880

約数和(自身を除く): 25099640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 887, 1126, 1774, 2252, 2815, 3548, 4435, 4504, 5630, 7096, 8870, 11260, 17740, 22520, 35480, 499381, 998762, 1997524, 2496905, 3995048, 4993810, 9987620, 19975240]

約数ペア:

[(1, 19975240), (2, 9987620), (4, 4993810), (5, 3995048), (8, 2496905), (10, 1997524), (20, 998762), (40, 499381), (563, 35480), (887, 22520), (1126, 17740), (1774, 11260), (2252, 8870), (2815, 7096), (3548, 5630), (4435, 4504)]