21528164

素因数分解:

$2^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{3217}}^1$

素因数の和:3467

約数の個数: 24

約数和(自身を含む): 43249920

約数和(自身を除く): 21721756

約数列:

[1, 2, 4, 7, 14, 28, 239, 478, 956, 1673, 3217, 3346, 6434, 6692, 12868, 22519, 45038, 90076, 768863, 1537726, 3075452, 5382041, 10764082, 21528164]

約数ペア:

[(1, 21528164), (2, 10764082), (4, 5382041), (7, 3075452), (14, 1537726), (28, 768863), (239, 90076), (478, 45038), (956, 22519), (1673, 12868), (3217, 6692), (3346, 6434)]