20346250

素因数分解:

$2^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:460

約数の個数: 40

約数和(自身を含む): 39165588

約数和(自身を除く): 18819338

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 397, 410, 625, 794, 1025, 1250, 1985, 2050, 3970, 5125, 9925, 10250, 16277, 19850, 25625, 32554, 49625, 51250, 81385, 99250, 162770, 248125, 406925, 496250, 813850, 2034625, 4069250, 10173125, 20346250]

約数ペア:

[(1, 20346250), (2, 10173125), (5, 4069250), (10, 2034625), (25, 813850), (41, 496250), (50, 406925), (82, 248125), (125, 162770), (205, 99250), (250, 81385), (397, 51250), (410, 49625), (625, 32554), (794, 25625), (1025, 19850), (1250, 16277), (1985, 10250), (2050, 9925), (3970, 5125)]