20145915

素因数分解:

$3^6\times 5^1\times {\mathrm{5527}}^1$

素因数の和:5550

約数の個数: 28

約数和(自身を含む): 36252624

約数和(自身を除く): 16106709

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5527, 16581, 27635, 49743, 82905, 149229, 248715, 447687, 746145, 1343061, 2238435, 4029183, 6715305, 20145915]

約数ペア:

[(1, 20145915), (3, 6715305), (5, 4029183), (9, 2238435), (15, 1343061), (27, 746145), (45, 447687), (81, 248715), (135, 149229), (243, 82905), (405, 49743), (729, 27635), (1215, 16581), (3645, 5527)]