20538855

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4519}}^1$

素因数の和:4631

約数の個数: 24

約数和(自身を含む): 35961120

約数和(自身を除く): 15422265

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4519, 4545, 13557, 22595, 40671, 67785, 203355, 456419, 1369257, 2282095, 4107771, 6846285, 20538855]

約数ペア:

[(1, 20538855), (3, 6846285), (5, 4107771), (9, 2282095), (15, 1369257), (45, 456419), (101, 203355), (303, 67785), (505, 40671), (909, 22595), (1515, 13557), (4519, 4545)]