20790800

素因数分解:

$2^4\times 5^2\times {\mathrm{51977}}^1$

素因数の和:51995

約数の個数: 30

約数和(自身を含む): 49950858

約数和(自身を除く): 29160058

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51977, 103954, 207908, 259885, 415816, 519770, 831632, 1039540, 1299425, 2079080, 2598850, 4158160, 5197700, 10395400, 20790800]

約数ペア:

[(1, 20790800), (2, 10395400), (4, 5197700), (5, 4158160), (8, 2598850), (10, 2079080), (16, 1299425), (20, 1039540), (25, 831632), (40, 519770), (50, 415816), (80, 259885), (100, 207908), (200, 103954), (400, 51977)]