20939875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 28986048

約数和(自身を除く): 8046173

約数列:

[1, 5, 11, 25, 55, 97, 125, 157, 275, 485, 785, 1067, 1375, 1727, 2425, 3925, 5335, 8635, 12125, 15229, 19625, 26675, 43175, 76145, 133375, 167519, 215875, 380725, 837595, 1903625, 4187975, 20939875]

約数ペア:

[(1, 20939875), (5, 4187975), (11, 1903625), (25, 837595), (55, 380725), (97, 215875), (125, 167519), (157, 133375), (275, 76145), (485, 43175), (785, 26675), (1067, 19625), (1375, 15229), (1727, 12125), (2425, 8635), (3925, 5335)]