20663139

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{233}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 32707584

約数和(自身を除く): 12044445

約数列:

[1, 3, 7, 21, 41, 103, 123, 233, 287, 309, 699, 721, 861, 1631, 2163, 4223, 4893, 9553, 12669, 23999, 28659, 29561, 66871, 71997, 88683, 167993, 200613, 503979, 983959, 2951877, 6887713, 20663139]

約数ペア:

[(1, 20663139), (3, 6887713), (7, 2951877), (21, 983959), (41, 503979), (103, 200613), (123, 167993), (233, 88683), (287, 71997), (309, 66871), (699, 29561), (721, 28659), (861, 23999), (1631, 12669), (2163, 9553), (4223, 4893)]