1978640

素因数分解:

$2^4\times 5^1\times {\mathrm{24733}}^1$

素因数の和:24746

約数の個数: 20

約数和(自身を含む): 4600524

約数和(自身を除く): 2621884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24733, 49466, 98932, 123665, 197864, 247330, 395728, 494660, 989320, 1978640]

約数ペア:

[(1, 1978640), (2, 989320), (4, 494660), (5, 395728), (8, 247330), (10, 197864), (16, 123665), (20, 98932), (40, 49466), (80, 24733)]