21447309

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10728051

約数列:

[1, 3, 13, 37, 39, 89, 111, 167, 267, 481, 501, 1157, 1443, 2171, 3293, 3471, 6179, 6513, 9879, 14863, 18537, 42809, 44589, 80327, 128427, 193219, 240981, 549931, 579657, 1649793, 7149103, 21447309]

約数ペア:

[(1, 21447309), (3, 7149103), (13, 1649793), (37, 579657), (39, 549931), (89, 240981), (111, 193219), (167, 128427), (267, 80327), (481, 44589), (501, 42809), (1157, 18537), (1443, 14863), (2171, 9879), (3293, 6513), (3471, 6179)]