28407440

素因数分解:

$2^4\times 5^1\times {\mathrm{355093}}^1$

素因数の和:355106

約数の個数: 20

約数和(自身を含む): 66047484

約数和(自身を除く): 37640044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355093, 710186, 1420372, 1775465, 2840744, 3550930, 5681488, 7101860, 14203720, 28407440]

約数ペア:

[(1, 28407440), (2, 14203720), (4, 7101860), (5, 5681488), (8, 3550930), (10, 2840744), (16, 1775465), (20, 1420372), (40, 710186), (80, 355093)]