21256450

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{10369}}^1$

素因数の和:10422

約数の個数: 24

約数和(自身を含む): 40505220

約数和(自身を除く): 19248770

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 410, 1025, 2050, 10369, 20738, 51845, 103690, 259225, 425129, 518450, 850258, 2125645, 4251290, 10628225, 21256450]

約数ペア:

[(1, 21256450), (2, 10628225), (5, 4251290), (10, 2125645), (25, 850258), (41, 518450), (50, 425129), (82, 259225), (205, 103690), (410, 51845), (1025, 20738), (2050, 10369)]