28651325

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 36604800

約数和(自身を除く): 7953475

約数列:

[1, 5, 25, 79, 89, 163, 395, 445, 815, 1975, 2225, 4075, 7031, 12877, 14507, 35155, 64385, 72535, 175775, 321925, 362675, 1146053, 5730265, 28651325]

約数ペア:

[(1, 28651325), (5, 5730265), (25, 1146053), (79, 362675), (89, 321925), (163, 175775), (395, 72535), (445, 64385), (815, 35155), (1975, 14507), (2225, 12877), (4075, 7031)]