21921520

素因数分解:

$2^4\times 5^1\times {\mathrm{274019}}^1$

素因数の和:274032

約数の個数: 20

約数和(自身を含む): 50967720

約数和(自身を除く): 29046200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274019, 548038, 1096076, 1370095, 2192152, 2740190, 4384304, 5480380, 10960760, 21921520]

約数ペア:

[(1, 21921520), (2, 10960760), (4, 5480380), (5, 4384304), (8, 2740190), (10, 2192152), (16, 1370095), (20, 1096076), (40, 548038), (80, 274019)]