21157788428

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39770279}}^1$

素因数の和:39770309

約数の個数: 24

約数和(自身を含む): 44542713600

約数和(自身を除く): 23384925172

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39770279, 79540558, 159081116, 278391953, 556783906, 755635301, 1113567812, 1511270602, 3022541204, 5289447107, 10578894214, 21157788428]

約数ペア:

[(1, 21157788428), (2, 10578894214), (4, 5289447107), (7, 3022541204), (14, 1511270602), (19, 1113567812), (28, 755635301), (38, 556783906), (76, 278391953), (133, 159081116), (266, 79540558), (532, 39770279)]