20645548

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3943}}^1$

素因数の和:3982

約数の個数: 48

約数和(自身を含む): 47706624

約数和(自身を除く): 27061076

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 3943, 5236, 7886, 15772, 27601, 43373, 55202, 67031, 86746, 110404, 134062, 173492, 268124, 303611, 469217, 607222, 737341, 938434, 1214444, 1474682, 1876868, 2949364, 5161387, 10322774, 20645548]

約数ペア:

[(1, 20645548), (2, 10322774), (4, 5161387), (7, 2949364), (11, 1876868), (14, 1474682), (17, 1214444), (22, 938434), (28, 737341), (34, 607222), (44, 469217), (68, 303611), (77, 268124), (119, 173492), (154, 134062), (187, 110404), (238, 86746), (308, 67031), (374, 55202), (476, 43373), (748, 27601), (1309, 15772), (2618, 7886), (3943, 5236)]