21581706

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{67867}}^1$

素因数の和:67925

約数の個数: 16

約数和(自身を含む): 43978464

約数和(自身を除く): 22396758

約数列:

[1, 2, 3, 6, 53, 106, 159, 318, 67867, 135734, 203601, 407202, 3596951, 7193902, 10790853, 21581706]

約数ペア:

[(1, 21581706), (2, 10790853), (3, 7193902), (6, 3596951), (53, 407202), (106, 203601), (159, 135734), (318, 67867)]