20455575

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{829}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 39521280

約数和(自身を除く): 19065705

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 525, 705, 829, 987, 1175, 1645, 2487, 3525, 4145, 4935, 5803, 8225, 12435, 17409, 20725, 24675, 29015, 38963, 62175, 87045, 116889, 145075, 194815, 272741, 435225, 584445, 818223, 974075, 1363705, 2922225, 4091115, 6818525, 20455575]

約数ペア:

[(1, 20455575), (3, 6818525), (5, 4091115), (7, 2922225), (15, 1363705), (21, 974075), (25, 818223), (35, 584445), (47, 435225), (75, 272741), (105, 194815), (141, 145075), (175, 116889), (235, 87045), (329, 62175), (525, 38963), (705, 29015), (829, 24675), (987, 20725), (1175, 17409), (1645, 12435), (2487, 8225), (3525, 5803), (4145, 4935)]