21522991

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3947}}^1$

素因数の和:4014

約数の個数: 16

約数和(自身を含む): 26530560

約数和(自身を除く): 5007569

約数列:

[1, 7, 19, 41, 133, 287, 779, 3947, 5453, 27629, 74993, 161827, 524951, 1132789, 3074713, 21522991]

約数ペア:

[(1, 21522991), (7, 3074713), (19, 1132789), (41, 524951), (133, 161827), (287, 74993), (779, 27629), (3947, 5453)]