2811985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:129

約数の個数: 32

約数和(自身を含む): 3991680

約数和(自身を除く): 1179695

約数列:

[1, 5, 11, 29, 41, 43, 55, 145, 205, 215, 319, 451, 473, 1189, 1247, 1595, 1763, 2255, 2365, 5945, 6235, 8815, 13079, 13717, 19393, 51127, 65395, 68585, 96965, 255635, 562397, 2811985]

約数ペア:

[(1, 2811985), (5, 562397), (11, 255635), (29, 96965), (41, 68585), (43, 65395), (55, 51127), (145, 19393), (205, 13717), (215, 13079), (319, 8815), (451, 6235), (473, 5945), (1189, 2365), (1247, 2255), (1595, 1763)]