20712045

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 34604928

約数和(自身を除く): 13892883

約数列:

[1, 3, 5, 15, 37, 67, 111, 185, 201, 335, 555, 557, 1005, 1671, 2479, 2785, 7437, 8355, 12395, 20609, 37185, 37319, 61827, 103045, 111957, 186595, 309135, 559785, 1380803, 4142409, 6904015, 20712045]

約数ペア:

[(1, 20712045), (3, 6904015), (5, 4142409), (15, 1380803), (37, 559785), (67, 309135), (111, 186595), (185, 111957), (201, 103045), (335, 61827), (555, 37319), (557, 37185), (1005, 20609), (1671, 12395), (2479, 8355), (2785, 7437)]