28616715

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 53044992

約数和(自身を除く): 24428277

約数列:

[1, 3, 5, 9, 15, 23, 43, 45, 69, 115, 129, 207, 215, 345, 387, 643, 645, 989, 1035, 1929, 1935, 2967, 3215, 4945, 5787, 8901, 9645, 14789, 14835, 27649, 28935, 44367, 44505, 73945, 82947, 133101, 138245, 221835, 248841, 414735, 635927, 665505, 1244205, 1907781, 3179635, 5723343, 9538905, 28616715]

約数ペア:

[(1, 28616715), (3, 9538905), (5, 5723343), (9, 3179635), (15, 1907781), (23, 1244205), (43, 665505), (45, 635927), (69, 414735), (115, 248841), (129, 221835), (207, 138245), (215, 133101), (345, 82947), (387, 73945), (643, 44505), (645, 44367), (989, 28935), (1035, 27649), (1929, 14835), (1935, 14789), (2967, 9645), (3215, 8901), (4945, 5787)]