19707705

素因数分解:

$3^4\times 5^1\times {\mathrm{48661}}^1$

素因数の和:48678

約数の個数: 20

約数和(自身を含む): 35328612

約数和(自身を除く): 15620907

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 48661, 145983, 243305, 437949, 729915, 1313847, 2189745, 3941541, 6569235, 19707705]

約数ペア:

[(1, 19707705), (3, 6569235), (5, 3941541), (9, 2189745), (15, 1313847), (27, 729915), (45, 437949), (81, 243305), (135, 145983), (405, 48661)]