20835514

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 40492800

約数和(自身を除く): 19657286

約数列:

[1, 2, 7, 14, 19, 29, 37, 38, 58, 73, 74, 133, 146, 203, 259, 266, 406, 511, 518, 551, 703, 1022, 1073, 1102, 1387, 1406, 2117, 2146, 2701, 2774, 3857, 4234, 4921, 5402, 7511, 7714, 9709, 9842, 14819, 15022, 18907, 19418, 20387, 29638, 37814, 40223, 40774, 51319, 78329, 80446, 102638, 142709, 156658, 281561, 285418, 359233, 548303, 563122, 718466, 1096606, 1488251, 2976502, 10417757, 20835514]

約数ペア:

[(1, 20835514), (2, 10417757), (7, 2976502), (14, 1488251), (19, 1096606), (29, 718466), (37, 563122), (38, 548303), (58, 359233), (73, 285418), (74, 281561), (133, 156658), (146, 142709), (203, 102638), (259, 80446), (266, 78329), (406, 51319), (511, 40774), (518, 40223), (551, 37814), (703, 29638), (1022, 20387), (1073, 19418), (1102, 18907), (1387, 15022), (1406, 14819), (2117, 9842), (2146, 9709), (2701, 7714), (2774, 7511), (3857, 5402), (4234, 4921)]