79889720

素因数分解:

$2^3\times 5^1\times {\mathrm{1997243}}^1$

素因数の和:1997254

約数の個数: 16

約数和(自身を含む): 179751960

約数和(自身を除く): 99862240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997243, 3994486, 7988972, 9986215, 15977944, 19972430, 39944860, 79889720]

約数ペア:

[(1, 79889720), (2, 39944860), (4, 19972430), (5, 15977944), (8, 9986215), (10, 7988972), (20, 3994486), (40, 1997243)]