79881040

素因数分解:

$2^4\times 5^1\times {\mathrm{998513}}^1$

素因数の和:998526

約数の個数: 20

約数和(自身を含む): 185723604

約数和(自身を除く): 105842564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 998513, 1997026, 3994052, 4992565, 7988104, 9985130, 15976208, 19970260, 39940520, 79881040]

約数ペア:

[(1, 79881040), (2, 39940520), (4, 19970260), (5, 15976208), (8, 9985130), (10, 7988104), (16, 4992565), (20, 3994052), (40, 1997026), (80, 998513)]