21207250

素因数分解:

$2^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{2069}}^1$

素因数の和:2127

約数の個数: 32

約数和(自身を含む): 40687920

約数和(自身を除く): 19480670

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 1025, 2050, 2069, 4138, 5125, 10250, 10345, 20690, 51725, 84829, 103450, 169658, 258625, 424145, 517250, 848290, 2120725, 4241450, 10603625, 21207250]

約数ペア:

[(1, 21207250), (2, 10603625), (5, 4241450), (10, 2120725), (25, 848290), (41, 517250), (50, 424145), (82, 258625), (125, 169658), (205, 103450), (250, 84829), (410, 51725), (1025, 20690), (2050, 10345), (2069, 10250), (4138, 5125)]