28115725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5381}}^1$

素因数の和:5421

約数の個数: 24

約数和(自身を含む): 40042080

約数和(自身を除く): 11926355

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 5225, 5381, 26905, 59191, 102239, 134525, 295955, 511195, 1124629, 1479775, 2555975, 5623145, 28115725]

約数ペア:

[(1, 28115725), (5, 5623145), (11, 2555975), (19, 1479775), (25, 1124629), (55, 511195), (95, 295955), (209, 134525), (275, 102239), (475, 59191), (1045, 26905), (5225, 5381)]