20545515

素因数分解:

$3^3\times 5^1\times {\mathrm{152189}}^1$

素因数の和:152203

約数の個数: 16

約数和(自身を含む): 36525600

約数和(自身を除く): 15980085

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 152189, 456567, 760945, 1369701, 2282835, 4109103, 6848505, 20545515]

約数ペア:

[(1, 20545515), (3, 6848505), (5, 4109103), (9, 2282835), (15, 1369701), (27, 760945), (45, 456567), (135, 152189)]