21187218

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6317}}^1$

素因数の和:6378

約数の個数: 32

約数和(自身を含む): 46702656

約数和(自身を除く): 25515438

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 258, 559, 1118, 1677, 3354, 6317, 12634, 18951, 37902, 82121, 164242, 246363, 271631, 492726, 543262, 814893, 1629786, 3531203, 7062406, 10593609, 21187218]

約数ペア:

[(1, 21187218), (2, 10593609), (3, 7062406), (6, 3531203), (13, 1629786), (26, 814893), (39, 543262), (43, 492726), (78, 271631), (86, 246363), (129, 164242), (258, 82121), (559, 37902), (1118, 18951), (1677, 12634), (3354, 6317)]