20157885

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 38495808

約数和(自身を除く): 18337923

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 193, 211, 495, 579, 633, 965, 1055, 1737, 1899, 2123, 2321, 2895, 3165, 6369, 6963, 8685, 9495, 10615, 11605, 19107, 20889, 31845, 34815, 40723, 95535, 104445, 122169, 203615, 366507, 447953, 610845, 1343859, 1832535, 2239765, 4031577, 6719295, 20157885]

約数ペア:

[(1, 20157885), (3, 6719295), (5, 4031577), (9, 2239765), (11, 1832535), (15, 1343859), (33, 610845), (45, 447953), (55, 366507), (99, 203615), (165, 122169), (193, 104445), (211, 95535), (495, 40723), (579, 34815), (633, 31845), (965, 20889), (1055, 19107), (1737, 11605), (1899, 10615), (2123, 9495), (2321, 8685), (2895, 6963), (3165, 6369)]