20708974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 39836160

約数和(自身を除く): 19127186

約数列:

[1, 2, 11, 13, 19, 22, 26, 37, 38, 74, 103, 143, 206, 209, 247, 286, 407, 418, 481, 494, 703, 814, 962, 1133, 1339, 1406, 1957, 2266, 2678, 2717, 3811, 3914, 5291, 5434, 7622, 7733, 9139, 10582, 14729, 15466, 18278, 21527, 25441, 29458, 41921, 43054, 49543, 50882, 72409, 83842, 99086, 100529, 144818, 201058, 279851, 544973, 559702, 796499, 941317, 1089946, 1592998, 1882634, 10354487, 20708974]

約数ペア:

[(1, 20708974), (2, 10354487), (11, 1882634), (13, 1592998), (19, 1089946), (22, 941317), (26, 796499), (37, 559702), (38, 544973), (74, 279851), (103, 201058), (143, 144818), (206, 100529), (209, 99086), (247, 83842), (286, 72409), (407, 50882), (418, 49543), (481, 43054), (494, 41921), (703, 29458), (814, 25441), (962, 21527), (1133, 18278), (1339, 15466), (1406, 14729), (1957, 10582), (2266, 9139), (2678, 7733), (2717, 7622), (3811, 5434), (3914, 5291)]