21645244

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{491}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 38683008

約数和(自身を除く): 17037764

約数列:

[1, 2, 4, 103, 107, 206, 214, 412, 428, 491, 982, 1964, 11021, 22042, 44084, 50573, 52537, 101146, 105074, 202292, 210148, 5411311, 10822622, 21645244]

約数ペア:

[(1, 21645244), (2, 10822622), (4, 5411311), (103, 210148), (107, 202292), (206, 105074), (214, 101146), (412, 52537), (428, 50573), (491, 44084), (982, 22042), (1964, 11021)]