21518973

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2777}}^1$

素因数の和:2834

約数の個数: 32

約数和(自身を含む): 37336320

約数和(自身を除く): 15817347

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 287, 369, 861, 1107, 2583, 2777, 7749, 8331, 19439, 24993, 58317, 74979, 113857, 174951, 341571, 524853, 796999, 1024713, 2390997, 3074139, 7172991, 21518973]

約数ペア:

[(1, 21518973), (3, 7172991), (7, 3074139), (9, 2390997), (21, 1024713), (27, 796999), (41, 524853), (63, 341571), (123, 174951), (189, 113857), (287, 74979), (369, 58317), (861, 24993), (1107, 19439), (2583, 8331), (2777, 7749)]