28065681

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2767}}^1$

素因数の和:2810

約数の個数: 36

約数和(自身を含む): 49226112

約数和(自身を除く): 21160431

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 2767, 3381, 8301, 10143, 19369, 24903, 58107, 63641, 135583, 174321, 190923, 406749, 445487, 572769, 1220247, 1336461, 3118409, 4009383, 9355227, 28065681]

約数ペア:

[(1, 28065681), (3, 9355227), (7, 4009383), (9, 3118409), (21, 1336461), (23, 1220247), (49, 572769), (63, 445487), (69, 406749), (147, 190923), (161, 174321), (207, 135583), (441, 63641), (483, 58107), (1127, 24903), (1449, 19369), (2767, 10143), (3381, 8301)]