21203378

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^2\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 36

約数和(自身を含む): 38770830

約数和(自身を除く): 17567452

約数列:

[1, 2, 7, 14, 23, 46, 49, 98, 161, 322, 409, 529, 818, 1058, 1127, 2254, 2863, 3703, 5726, 7406, 9407, 18814, 20041, 25921, 40082, 51842, 65849, 131698, 216361, 432722, 460943, 921886, 1514527, 3029054, 10601689, 21203378]

約数ペア:

[(1, 21203378), (2, 10601689), (7, 3029054), (14, 1514527), (23, 921886), (46, 460943), (49, 432722), (98, 216361), (161, 131698), (322, 65849), (409, 51842), (529, 40082), (818, 25921), (1058, 20041), (1127, 18814), (2254, 9407), (2863, 7406), (3703, 5726)]