20160820215

素因数分解:

$3^4\times 5^1\times {\mathrm{49779803}}^1$

素因数の和:49779820

約数の個数: 20

約数和(自身を含む): 36140137704

約数和(自身を除く): 15979317489

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49779803, 149339409, 248899015, 448018227, 746697045, 1344054681, 2240091135, 4032164043, 6720273405, 20160820215]

約数ペア:

[(1, 20160820215), (3, 6720273405), (5, 4032164043), (9, 2240091135), (15, 1344054681), (27, 746697045), (45, 448018227), (81, 248899015), (135, 149339409), (405, 49779803)]