21358904

素因数分解:

$2^3\times 7^2\times {\mathrm{23}}^2\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 49172760

約数和(自身を除く): 27813856

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 49, 56, 92, 98, 103, 161, 184, 196, 206, 322, 392, 412, 529, 644, 721, 824, 1058, 1127, 1288, 1442, 2116, 2254, 2369, 2884, 3703, 4232, 4508, 4738, 5047, 5768, 7406, 9016, 9476, 10094, 14812, 16583, 18952, 20188, 25921, 29624, 33166, 40376, 51842, 54487, 66332, 103684, 108974, 116081, 132664, 207368, 217948, 232162, 381409, 435896, 464324, 762818, 928648, 1525636, 2669863, 3051272, 5339726, 10679452, 21358904]

約数ペア:

[(1, 21358904), (2, 10679452), (4, 5339726), (7, 3051272), (8, 2669863), (14, 1525636), (23, 928648), (28, 762818), (46, 464324), (49, 435896), (56, 381409), (92, 232162), (98, 217948), (103, 207368), (161, 132664), (184, 116081), (196, 108974), (206, 103684), (322, 66332), (392, 54487), (412, 51842), (529, 40376), (644, 33166), (721, 29624), (824, 25921), (1058, 20188), (1127, 18952), (1288, 16583), (1442, 14812), (2116, 10094), (2254, 9476), (2369, 9016), (2884, 7406), (3703, 5768), (4232, 5047), (4508, 4738)]