21021889

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:960

約数の個数: 16

約数和(自身を含む): 24917760

約数和(自身を除く): 3895871

約数列:

[1, 7, 41, 89, 287, 623, 823, 3649, 5761, 25543, 33743, 73247, 236201, 512729, 3003127, 21021889]

約数ペア:

[(1, 21021889), (7, 3003127), (41, 512729), (89, 236201), (287, 73247), (623, 33743), (823, 25543), (3649, 5761)]