21100575

素因数分解:

$3^1\times 5^2\times {\mathrm{353}}^1\times {\mathrm{797}}^1$

素因数の和:1163

約数の個数: 24

約数和(自身を含む): 35029008

約数和(自身を除く): 13928433

約数列:

[1, 3, 5, 15, 25, 75, 353, 797, 1059, 1765, 2391, 3985, 5295, 8825, 11955, 19925, 26475, 59775, 281341, 844023, 1406705, 4220115, 7033525, 21100575]

約数ペア:

[(1, 21100575), (3, 7033525), (5, 4220115), (15, 1406705), (25, 844023), (75, 281341), (353, 59775), (797, 26475), (1059, 19925), (1765, 11955), (2391, 8825), (3985, 5295)]