21112312

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4721}}^1$

素因数の和:4783

約数の個数: 32

約数和(自身を含む): 43631280

約数和(自身を除く): 22518968

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4721, 9442, 18884, 37768, 61373, 122746, 203003, 245492, 406006, 490984, 812012, 1624024, 2639039, 5278078, 10556156, 21112312]

約数ペア:

[(1, 21112312), (2, 10556156), (4, 5278078), (8, 2639039), (13, 1624024), (26, 812012), (43, 490984), (52, 406006), (86, 245492), (104, 203003), (172, 122746), (344, 61373), (559, 37768), (1118, 18884), (2236, 9442), (4472, 4721)]