21033845

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:134

約数の個数: 64

約数和(自身を含む): 33592320

約数和(自身を除く): 12558475

約数列:

[1, 5, 7, 17, 23, 29, 35, 53, 85, 115, 119, 145, 161, 203, 265, 371, 391, 493, 595, 667, 805, 901, 1015, 1219, 1537, 1855, 1955, 2465, 2737, 3335, 3451, 4505, 4669, 6095, 6307, 7685, 8533, 10759, 11339, 13685, 17255, 20723, 23345, 26129, 31535, 35351, 42665, 53795, 56695, 79373, 103615, 130645, 145061, 176755, 182903, 247457, 396865, 600967, 725305, 914515, 1237285, 3004835, 4206769, 21033845]

約数ペア:

[(1, 21033845), (5, 4206769), (7, 3004835), (17, 1237285), (23, 914515), (29, 725305), (35, 600967), (53, 396865), (85, 247457), (115, 182903), (119, 176755), (145, 145061), (161, 130645), (203, 103615), (265, 79373), (371, 56695), (391, 53795), (493, 42665), (595, 35351), (667, 31535), (805, 26129), (901, 23345), (1015, 20723), (1219, 17255), (1537, 13685), (1855, 11339), (1955, 10759), (2465, 8533), (2737, 7685), (3335, 6307), (3451, 6095), (4505, 4669)]