21019922

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:112

約数の個数: 96

約数和(自身を含む): 44914176

約数和(自身を除く): 23894254

約数列:

[1, 2, 7, 11, 14, 17, 22, 31, 34, 37, 49, 62, 74, 77, 98, 119, 154, 187, 217, 238, 259, 341, 374, 407, 434, 518, 527, 539, 629, 682, 814, 833, 1054, 1078, 1147, 1258, 1309, 1519, 1666, 1813, 2294, 2387, 2618, 2849, 3038, 3626, 3689, 4403, 4774, 5698, 5797, 6919, 7378, 8029, 8806, 9163, 11594, 12617, 13838, 16058, 16709, 18326, 19499, 19943, 25234, 25823, 30821, 33418, 38998, 39886, 40579, 48433, 51646, 56203, 61642, 81158, 88319, 96866, 112406, 136493, 176638, 214489, 272986, 284053, 339031, 428978, 568106, 618233, 678062, 955451, 1236466, 1501423, 1910902, 3002846, 10509961, 21019922]

約数ペア:

[(1, 21019922), (2, 10509961), (7, 3002846), (11, 1910902), (14, 1501423), (17, 1236466), (22, 955451), (31, 678062), (34, 618233), (37, 568106), (49, 428978), (62, 339031), (74, 284053), (77, 272986), (98, 214489), (119, 176638), (154, 136493), (187, 112406), (217, 96866), (238, 88319), (259, 81158), (341, 61642), (374, 56203), (407, 51646), (434, 48433), (518, 40579), (527, 39886), (539, 38998), (629, 33418), (682, 30821), (814, 25823), (833, 25234), (1054, 19943), (1078, 19499), (1147, 18326), (1258, 16709), (1309, 16058), (1519, 13838), (1666, 12617), (1813, 11594), (2294, 9163), (2387, 8806), (2618, 8029), (2849, 7378), (3038, 6919), (3626, 5797), (3689, 5698), (4403, 4774)]