21000565456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{893489}}^1$

素因数の和:893623

約数の個数: 40

約数和(自身を含む): 44206311240

約数和(自身を除く): 23205745784

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 113, 208, 226, 452, 904, 1469, 1808, 2938, 5876, 11752, 23504, 893489, 1786978, 3573956, 7147912, 11615357, 14295824, 23230714, 46461428, 92922856, 100964257, 185845712, 201928514, 403857028, 807714056, 1312535341, 1615428112, 2625070682, 5250141364, 10500282728, 21000565456]

約数ペア:

[(1, 21000565456), (2, 10500282728), (4, 5250141364), (8, 2625070682), (13, 1615428112), (16, 1312535341), (26, 807714056), (52, 403857028), (104, 201928514), (113, 185845712), (208, 100964257), (226, 92922856), (452, 46461428), (904, 23230714), (1469, 14295824), (1808, 11615357), (2938, 7147912), (5876, 3573956), (11752, 1786978), (23504, 893489)]