20115945

素因数分解:

$3^4\times 5^1\times {\mathrm{49669}}^1$

素因数の和:49686

約数の個数: 20

約数和(自身を含む): 36060420

約数和(自身を除く): 15944475

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49669, 149007, 248345, 447021, 745035, 1341063, 2235105, 4023189, 6705315, 20115945]

約数ペア:

[(1, 20115945), (3, 6705315), (5, 4023189), (9, 2235105), (15, 1341063), (27, 745035), (45, 447021), (81, 248345), (135, 149007), (405, 49669)]