21699938

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 38649600

約数和(自身を除く): 16949662

約数列:

[1, 2, 13, 19, 26, 31, 38, 62, 109, 169, 218, 247, 338, 403, 494, 589, 806, 1178, 1417, 2071, 2834, 3211, 3379, 4142, 5239, 6422, 6758, 7657, 10478, 15314, 18421, 26923, 36842, 43927, 53846, 64201, 87854, 99541, 128402, 199082, 349999, 571051, 699998, 834613, 1142102, 1669226, 10849969, 21699938]

約数ペア:

[(1, 21699938), (2, 10849969), (13, 1669226), (19, 1142102), (26, 834613), (31, 699998), (38, 571051), (62, 349999), (109, 199082), (169, 128402), (218, 99541), (247, 87854), (338, 64201), (403, 53846), (494, 43927), (589, 36842), (806, 26923), (1178, 18421), (1417, 15314), (2071, 10478), (2834, 7657), (3211, 6758), (3379, 6422), (4142, 5239)]