18913843

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^2$

素因数の和:175

約数の個数: 24

約数和(自身を含む): 22879584

約数和(自身を除く): 3965741

約数列:

[1, 13, 17, 23, 61, 221, 299, 391, 793, 1037, 1403, 3721, 5083, 13481, 18239, 23851, 48373, 63257, 85583, 310063, 822341, 1112579, 1454911, 18913843]

約数ペア:

[(1, 18913843), (13, 1454911), (17, 1112579), (23, 822341), (61, 310063), (221, 85583), (299, 63257), (391, 48373), (793, 23851), (1037, 18239), (1403, 13481), (3721, 5083)]