20555145

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{857}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 39351312

約数和(自身を除く): 18796167

約数列:

[1, 3, 5, 9, 13, 15, 39, 41, 45, 65, 117, 123, 195, 205, 369, 533, 585, 615, 857, 1599, 1845, 2571, 2665, 4285, 4797, 7713, 7995, 11141, 12855, 23985, 33423, 35137, 38565, 55705, 100269, 105411, 167115, 175685, 316233, 456781, 501345, 527055, 1370343, 1581165, 2283905, 4111029, 6851715, 20555145]

約数ペア:

[(1, 20555145), (3, 6851715), (5, 4111029), (9, 2283905), (13, 1581165), (15, 1370343), (39, 527055), (41, 501345), (45, 456781), (65, 316233), (117, 175685), (123, 167115), (195, 105411), (205, 100269), (369, 55705), (533, 38565), (585, 35137), (615, 33423), (857, 23985), (1599, 12855), (1845, 11141), (2571, 7995), (2665, 7713), (4285, 4797)]