20386815

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{337}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 33908160

約数和(自身を除く): 13521345

約数列:

[1, 3, 5, 15, 37, 109, 111, 185, 327, 337, 545, 555, 1011, 1635, 1685, 4033, 5055, 12099, 12469, 20165, 36733, 37407, 60495, 62345, 110199, 183665, 187035, 550995, 1359121, 4077363, 6795605, 20386815]

約数ペア:

[(1, 20386815), (3, 6795605), (5, 4077363), (15, 1359121), (37, 550995), (109, 187035), (111, 183665), (185, 110199), (327, 62345), (337, 60495), (545, 37407), (555, 36733), (1011, 20165), (1635, 12469), (1685, 12099), (4033, 5055)]