20985345

素因数分解:

$3^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{433}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 16512255

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 359, 433, 1077, 1299, 1795, 2165, 3231, 3897, 5385, 6495, 9693, 11691, 16155, 19485, 48465, 58455, 155447, 466341, 777235, 1399023, 2331705, 4197069, 6995115, 20985345]

約数ペア:

[(1, 20985345), (3, 6995115), (5, 4197069), (9, 2331705), (15, 1399023), (27, 777235), (45, 466341), (135, 155447), (359, 58455), (433, 48465), (1077, 19485), (1299, 16155), (1795, 11691), (2165, 9693), (3231, 6495), (3897, 5385)]