1980135

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{557}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 3481920

約数和(自身を除く): 1501785

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 557, 711, 1185, 1671, 2785, 3555, 5013, 8355, 25065, 44003, 132009, 220015, 396027, 660045, 1980135]

約数ペア:

[(1, 1980135), (3, 660045), (5, 396027), (9, 220015), (15, 132009), (45, 44003), (79, 25065), (237, 8355), (395, 5013), (557, 3555), (711, 2785), (1185, 1671)]