21911631

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19687}}^1$

素因数の和:19750

約数の個数: 16

約数和(自身を含む): 34020864

約数和(自身を除く): 12109233

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19687, 59061, 137809, 413427, 1043411, 3130233, 7303877, 21911631]

約数ペア:

[(1, 21911631), (3, 7303877), (7, 3130233), (21, 1043411), (53, 413427), (159, 137809), (371, 59061), (1113, 19687)]