40790320

素因数分解:

$2^4\times 5^1\times {\mathrm{509879}}^1$

素因数の和:509892

約数の個数: 20

約数和(自身を含む): 94837680

約数和(自身を除く): 54047360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509879, 1019758, 2039516, 2549395, 4079032, 5098790, 8158064, 10197580, 20395160, 40790320]

約数ペア:

[(1, 40790320), (2, 20395160), (4, 10197580), (5, 8158064), (8, 5098790), (10, 4079032), (16, 2549395), (20, 2039516), (40, 1019758), (80, 509879)]