31981755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{409}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 55379520

約数和(自身を除く): 23397765

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 401, 409, 1203, 1227, 2005, 2045, 5213, 5317, 6015, 6135, 15639, 15951, 26065, 26585, 78195, 79755, 164009, 492027, 820045, 2132117, 2460135, 6396351, 10660585, 31981755]

約数ペア:

[(1, 31981755), (3, 10660585), (5, 6396351), (13, 2460135), (15, 2132117), (39, 820045), (65, 492027), (195, 164009), (401, 79755), (409, 78195), (1203, 26585), (1227, 26065), (2005, 15951), (2045, 15639), (5213, 6135), (5317, 6015)]