19889631

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{89}}^2$

素因数の和:221

約数の個数: 30

約数和(自身を含む): 31018592

約数和(自身を除く): 11128961

約数列:

[1, 3, 9, 27, 31, 81, 89, 93, 267, 279, 801, 837, 2403, 2511, 2759, 7209, 7921, 8277, 23763, 24831, 71289, 74493, 213867, 223479, 245551, 641601, 736653, 2209959, 6629877, 19889631]

約数ペア:

[(1, 19889631), (3, 6629877), (9, 2209959), (27, 736653), (31, 641601), (81, 245551), (89, 223479), (93, 213867), (267, 74493), (279, 71289), (801, 24831), (837, 23763), (2403, 8277), (2511, 7921), (2759, 7209)]