28439845

素因数分解:

$5^1\times 7^4\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 40

約数和(自身を含む): 41947776

約数和(自身を除く): 13507931

約数列:

[1, 5, 7, 23, 35, 49, 103, 115, 161, 245, 343, 515, 721, 805, 1127, 1715, 2369, 2401, 3605, 5047, 5635, 7889, 11845, 12005, 16583, 25235, 35329, 39445, 55223, 82915, 116081, 176645, 247303, 276115, 580405, 812567, 1236515, 4062835, 5687969, 28439845]

約数ペア:

[(1, 28439845), (5, 5687969), (7, 4062835), (23, 1236515), (35, 812567), (49, 580405), (103, 276115), (115, 247303), (161, 176645), (245, 116081), (343, 82915), (515, 55223), (721, 39445), (805, 35329), (1127, 25235), (1715, 16583), (2369, 12005), (2401, 11845), (3605, 7889), (5047, 5635)]