28405840

素因数分解:

$2^4\times 5^1\times {\mathrm{355073}}^1$

素因数の和:355086

約数の個数: 20

約数和(自身を含む): 66043764

約数和(自身を除く): 37637924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355073, 710146, 1420292, 1775365, 2840584, 3550730, 5681168, 7101460, 14202920, 28405840]

約数ペア:

[(1, 28405840), (2, 14202920), (4, 7101460), (5, 5681168), (8, 3550730), (10, 2840584), (16, 1775365), (20, 1420292), (40, 710146), (80, 355073)]