19903312

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{8699}}^1$

素因数の和:8731

約数の個数: 40

約数和(自身を含む): 45309600

約数和(自身を除く): 25406288

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 8699, 17398, 34796, 69592, 95689, 113087, 139184, 191378, 226174, 382756, 452348, 765512, 904696, 1243957, 1531024, 1809392, 2487914, 4975828, 9951656, 19903312]

約数ペア:

[(1, 19903312), (2, 9951656), (4, 4975828), (8, 2487914), (11, 1809392), (13, 1531024), (16, 1243957), (22, 904696), (26, 765512), (44, 452348), (52, 382756), (88, 226174), (104, 191378), (143, 139184), (176, 113087), (208, 95689), (286, 69592), (572, 34796), (1144, 17398), (2288, 8699)]