16856820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1405

約数の個数: 72

約数和(自身を含む): 51891840

約数和(自身を除く): 35035020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1319, 1420, 2130, 2556, 2638, 3195, 3957, 4260, 5276, 6390, 6595, 7914, 11871, 12780, 13190, 15828, 19785, 23742, 26380, 39570, 47484, 59355, 79140, 93649, 118710, 187298, 237420, 280947, 374596, 468245, 561894, 842841, 936490, 1123788, 1404735, 1685682, 1872980, 2809470, 3371364, 4214205, 5618940, 8428410, 16856820]

約数ペア:

[(1, 16856820), (2, 8428410), (3, 5618940), (4, 4214205), (5, 3371364), (6, 2809470), (9, 1872980), (10, 1685682), (12, 1404735), (15, 1123788), (18, 936490), (20, 842841), (30, 561894), (36, 468245), (45, 374596), (60, 280947), (71, 237420), (90, 187298), (142, 118710), (180, 93649), (213, 79140), (284, 59355), (355, 47484), (426, 39570), (639, 26380), (710, 23742), (852, 19785), (1065, 15828), (1278, 13190), (1319, 12780), (1420, 11871), (2130, 7914), (2556, 6595), (2638, 6390), (3195, 5276), (3957, 4260)]