28020575

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 39086040

約数和(自身を除く): 11065465

約数列:

[1, 5, 11, 25, 55, 59, 121, 157, 275, 295, 605, 649, 785, 1475, 1727, 3025, 3245, 3925, 7139, 8635, 9263, 16225, 18997, 35695, 43175, 46315, 94985, 101893, 178475, 231575, 474925, 509465, 1120823, 2547325, 5604115, 28020575]

約数ペア:

[(1, 28020575), (5, 5604115), (11, 2547325), (25, 1120823), (55, 509465), (59, 474925), (121, 231575), (157, 178475), (275, 101893), (295, 94985), (605, 46315), (649, 43175), (785, 35695), (1475, 18997), (1727, 16225), (3025, 9263), (3245, 8635), (3925, 7139)]