20257731

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 32612944

約数和(自身を除く): 12355213

約数列:

[1, 3, 9, 13, 39, 41, 103, 117, 123, 309, 369, 533, 927, 1339, 1599, 1681, 4017, 4223, 4797, 5043, 12051, 12669, 15129, 21853, 38007, 54899, 65559, 164697, 173143, 196677, 494091, 519429, 1558287, 2250859, 6752577, 20257731]

約数ペア:

[(1, 20257731), (3, 6752577), (9, 2250859), (13, 1558287), (39, 519429), (41, 494091), (103, 196677), (117, 173143), (123, 164697), (309, 65559), (369, 54899), (533, 38007), (927, 21853), (1339, 15129), (1599, 12669), (1681, 12051), (4017, 5043), (4223, 4797)]