21109616

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{433}}^1$

素因数の和:729

約数の個数: 40

約数和(自身を含む): 44882544

約数和(自身を除く): 23772928

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 277, 433, 554, 866, 1108, 1732, 2216, 3047, 3464, 4432, 4763, 6094, 6928, 9526, 12188, 19052, 24376, 38104, 48752, 76208, 119941, 239882, 479764, 959528, 1319351, 1919056, 2638702, 5277404, 10554808, 21109616]

約数ペア:

[(1, 21109616), (2, 10554808), (4, 5277404), (8, 2638702), (11, 1919056), (16, 1319351), (22, 959528), (44, 479764), (88, 239882), (176, 119941), (277, 76208), (433, 48752), (554, 38104), (866, 24376), (1108, 19052), (1732, 12188), (2216, 9526), (3047, 6928), (3464, 6094), (4432, 4763)]