21842743

素因数分解:

${\mathrm{13}}^2\times {\mathrm{307}}^1\times {\mathrm{421}}^1$

素因数の和:754

約数の個数: 12

約数和(自身を含む): 23785608

約数和(自身を除く): 1942865

約数列:

[1, 13, 169, 307, 421, 3991, 5473, 51883, 71149, 129247, 1680211, 21842743]

約数ペア:

[(1, 21842743), (13, 1680211), (169, 129247), (307, 71149), (421, 51883), (3991, 5473)]