18740463

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29767680

約数和(自身を除く): 11027217

約数列:

[1, 3, 7, 21, 37, 89, 111, 259, 267, 271, 623, 777, 813, 1869, 1897, 3293, 5691, 9879, 10027, 23051, 24119, 30081, 69153, 70189, 72357, 168833, 210567, 506499, 892403, 2677209, 6246821, 18740463]

約数ペア:

[(1, 18740463), (3, 6246821), (7, 2677209), (21, 892403), (37, 506499), (89, 210567), (111, 168833), (259, 72357), (267, 70189), (271, 69153), (623, 30081), (777, 24119), (813, 23051), (1869, 10027), (1897, 9879), (3293, 5691)]