21487347

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 38688000

約数和(自身を除く): 17200653

約数列:

[1, 3, 7, 9, 19, 21, 29, 57, 63, 87, 133, 171, 203, 261, 399, 551, 609, 619, 1197, 1653, 1827, 1857, 3857, 4333, 4959, 5571, 11571, 11761, 12999, 17951, 34713, 35283, 38997, 53853, 82327, 105849, 125657, 161559, 246981, 341069, 376971, 740943, 1023207, 1130913, 2387483, 3069621, 7162449, 21487347]

約数ペア:

[(1, 21487347), (3, 7162449), (7, 3069621), (9, 2387483), (19, 1130913), (21, 1023207), (29, 740943), (57, 376971), (63, 341069), (87, 246981), (133, 161559), (171, 125657), (203, 105849), (261, 82327), (399, 53853), (551, 38997), (609, 35283), (619, 34713), (1197, 17951), (1653, 12999), (1827, 11761), (1857, 11571), (3857, 5571), (4333, 4959)]