21715856

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{9109}}^1$

素因数の和:9266

約数の個数: 20

約数和(自身を含む): 42361500

約数和(自身を除く): 20645644

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 9109, 18218, 36436, 72872, 145744, 1357241, 2714482, 5428964, 10857928, 21715856]

約数ペア:

[(1, 21715856), (2, 10857928), (4, 5428964), (8, 2714482), (16, 1357241), (149, 145744), (298, 72872), (596, 36436), (1192, 18218), (2384, 9109)]