217690160

素因数分解:

$2^4\times 5^1\times {\mathrm{2721127}}^1$

素因数の和:2721140

約数の個数: 20

約数和(自身を含む): 506129808

約数和(自身を除く): 288439648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2721127, 5442254, 10884508, 13605635, 21769016, 27211270, 43538032, 54422540, 108845080, 217690160]

約数ペア:

[(1, 217690160), (2, 108845080), (4, 54422540), (5, 43538032), (8, 27211270), (10, 21769016), (16, 13605635), (20, 10884508), (40, 5442254), (80, 2721127)]