21895406

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 37195200

約数和(自身を除く): 15299794

約数列:

[1, 2, 13, 26, 29, 58, 71, 142, 377, 409, 754, 818, 923, 1846, 2059, 4118, 5317, 10634, 11861, 23722, 26767, 29039, 53534, 58078, 154193, 308386, 377507, 755014, 842131, 1684262, 10947703, 21895406]

約数ペア:

[(1, 21895406), (2, 10947703), (13, 1684262), (26, 842131), (29, 755014), (58, 377507), (71, 308386), (142, 154193), (377, 58078), (409, 53534), (754, 29039), (818, 26767), (923, 23722), (1846, 11861), (2059, 10634), (4118, 5317)]