20355705

素因数分解:

$3^4\times 5^1\times {\mathrm{50261}}^1$

素因数の和:50278

約数の個数: 20

約数和(自身を含む): 36490212

約数和(自身を除く): 16134507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50261, 150783, 251305, 452349, 753915, 1357047, 2261745, 4071141, 6785235, 20355705]

約数ペア:

[(1, 20355705), (3, 6785235), (5, 4071141), (9, 2261745), (15, 1357047), (27, 753915), (45, 452349), (81, 251305), (135, 150783), (405, 50261)]