20639631

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1\times {\mathrm{479}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 28200960

約数和(自身を除く): 7561329

約数列:

[1, 3, 53, 159, 271, 479, 813, 1437, 14363, 25387, 43089, 76161, 129809, 389427, 6879877, 20639631]

約数ペア:

[(1, 20639631), (3, 6879877), (53, 389427), (159, 129809), (271, 76161), (479, 43089), (813, 25387), (1437, 14363)]