19420155

素因数分解:

$3^4\times 5^1\times {\mathrm{47951}}^1$

素因数の和:47968

約数の個数: 20

約数和(自身を含む): 34813152

約数和(自身を除く): 15392997

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 47951, 143853, 239755, 431559, 719265, 1294677, 2157795, 3884031, 6473385, 19420155]

約数ペア:

[(1, 19420155), (3, 6473385), (5, 3884031), (9, 2157795), (15, 1294677), (27, 719265), (45, 431559), (81, 239755), (135, 143853), (405, 47951)]