21221794

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 38128896

約数和(自身を除く): 16907102

約数列:

[1, 2, 11, 22, 29, 31, 37, 58, 62, 74, 319, 341, 407, 638, 682, 814, 841, 899, 1073, 1147, 1682, 1798, 2146, 2294, 9251, 9889, 11803, 12617, 18502, 19778, 23606, 25234, 26071, 31117, 33263, 52142, 62234, 66526, 286781, 342287, 365893, 573562, 684574, 731786, 964627, 1929254, 10610897, 21221794]

約数ペア:

[(1, 21221794), (2, 10610897), (11, 1929254), (22, 964627), (29, 731786), (31, 684574), (37, 573562), (58, 365893), (62, 342287), (74, 286781), (319, 66526), (341, 62234), (407, 52142), (638, 33263), (682, 31117), (814, 26071), (841, 25234), (899, 23606), (1073, 19778), (1147, 18502), (1682, 12617), (1798, 11803), (2146, 9889), (2294, 9251)]