21286911

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{677}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 29159424

約数和(自身を除く): 7872513

約数列:

[1, 3, 47, 141, 223, 669, 677, 2031, 10481, 31443, 31819, 95457, 150971, 452913, 7095637, 21286911]

約数ペア:

[(1, 21286911), (3, 7095637), (47, 452913), (141, 150971), (223, 95457), (669, 31819), (677, 31443), (2031, 10481)]