20419695

素因数分解:

$3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 36985344

約数和(自身を除く): 16565649

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 127, 135, 381, 397, 405, 635, 1143, 1191, 1905, 1985, 3429, 3573, 5715, 5955, 10287, 10719, 17145, 17865, 32157, 50419, 51435, 53595, 151257, 160785, 252095, 453771, 756285, 1361313, 2268855, 4083939, 6806565, 20419695]

約数ペア:

[(1, 20419695), (3, 6806565), (5, 4083939), (9, 2268855), (15, 1361313), (27, 756285), (45, 453771), (81, 252095), (127, 160785), (135, 151257), (381, 53595), (397, 51435), (405, 50419), (635, 32157), (1143, 17865), (1191, 17145), (1905, 10719), (1985, 10287), (3429, 5955), (3573, 5715)]