21000421428

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1269061}}^1$

素因数の和:1269272

約数の個数: 48

約数和(自身を含む): 56285437824

約数和(自身を除く): 35285016396

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 197, 394, 591, 788, 1182, 1379, 2364, 2758, 4137, 5516, 8274, 16548, 1269061, 2538122, 3807183, 5076244, 7614366, 8883427, 15228732, 17766854, 26650281, 35533708, 53300562, 106601124, 250005017, 500010034, 750015051, 1000020068, 1500030102, 1750035119, 3000060204, 3500070238, 5250105357, 7000140476, 10500210714, 21000421428]

約数ペア:

[(1, 21000421428), (2, 10500210714), (3, 7000140476), (4, 5250105357), (6, 3500070238), (7, 3000060204), (12, 1750035119), (14, 1500030102), (21, 1000020068), (28, 750015051), (42, 500010034), (84, 250005017), (197, 106601124), (394, 53300562), (591, 35533708), (788, 26650281), (1182, 17766854), (1379, 15228732), (2364, 8883427), (2758, 7614366), (4137, 5076244), (5516, 3807183), (8274, 2538122), (16548, 1269061)]