128220705

素因数分解:

$3^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1823}}^1$

素因数の和:2358

約数の個数: 32

約数和(自身を含む): 228510720

約数和(自身を除く): 100290015

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 521, 1563, 1823, 2605, 4689, 5469, 7815, 9115, 14067, 16407, 23445, 27345, 49221, 70335, 82035, 246105, 949783, 2849349, 4748915, 8548047, 14246745, 25644141, 42740235, 128220705]

約数ペア:

[(1, 128220705), (3, 42740235), (5, 25644141), (9, 14246745), (15, 8548047), (27, 4748915), (45, 2849349), (135, 949783), (521, 246105), (1563, 82035), (1823, 70335), (2605, 49221), (4689, 27345), (5469, 23445), (7815, 16407), (9115, 14067)]