28517825

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1831}}^1$

素因数の和:1937

約数の個数: 24

約数和(自身を含む): 40890240

約数和(自身を除く): 12372415

約数列:

[1, 5, 7, 25, 35, 89, 175, 445, 623, 1831, 2225, 3115, 9155, 12817, 15575, 45775, 64085, 162959, 320425, 814795, 1140713, 4073975, 5703565, 28517825]

約数ペア:

[(1, 28517825), (5, 5703565), (7, 4073975), (25, 1140713), (35, 814795), (89, 320425), (175, 162959), (445, 64085), (623, 45775), (1831, 15575), (2225, 12817), (3115, 9155)]