20288675

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:404

約数の個数: 36

約数和(自身を含む): 29190840

約数和(自身を除く): 8902165

約数列:

[1, 5, 11, 19, 25, 55, 95, 121, 209, 275, 353, 475, 605, 1045, 1765, 2299, 3025, 3883, 5225, 6707, 8825, 11495, 19415, 33535, 42713, 57475, 73777, 97075, 167675, 213565, 368885, 811547, 1067825, 1844425, 4057735, 20288675]

約数ペア:

[(1, 20288675), (5, 4057735), (11, 1844425), (19, 1067825), (25, 811547), (55, 368885), (95, 213565), (121, 167675), (209, 97075), (275, 73777), (353, 57475), (475, 42713), (605, 33535), (1045, 19415), (1765, 11495), (2299, 8825), (3025, 6707), (3883, 5225)]