20665778

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2801}}^1$

素因数の和:2858

約数の個数: 32

約数和(自身を含む): 38734848

約数和(自身を除く): 18069070

約数列:

[1, 2, 7, 14, 17, 31, 34, 62, 119, 217, 238, 434, 527, 1054, 2801, 3689, 5602, 7378, 19607, 39214, 47617, 86831, 95234, 173662, 333319, 607817, 666638, 1215634, 1476127, 2952254, 10332889, 20665778]

約数ペア:

[(1, 20665778), (2, 10332889), (7, 2952254), (14, 1476127), (17, 1215634), (31, 666638), (34, 607817), (62, 333319), (119, 173662), (217, 95234), (238, 86831), (434, 47617), (527, 39214), (1054, 19607), (2801, 7378), (3689, 5602)]