20905100

素因数分解:

$2^2\times 5^2\times {\mathrm{349}}^1\times {\mathrm{599}}^1$

素因数の和:962

約数の個数: 36

約数和(自身を含む): 45570000

約数和(自身を除く): 24664900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 349, 599, 698, 1198, 1396, 1745, 2396, 2995, 3490, 5990, 6980, 8725, 11980, 14975, 17450, 29950, 34900, 59900, 209051, 418102, 836204, 1045255, 2090510, 4181020, 5226275, 10452550, 20905100]

約数ペア:

[(1, 20905100), (2, 10452550), (4, 5226275), (5, 4181020), (10, 2090510), (20, 1045255), (25, 836204), (50, 418102), (100, 209051), (349, 59900), (599, 34900), (698, 29950), (1198, 17450), (1396, 14975), (1745, 11980), (2396, 8725), (2995, 6980), (3490, 5990)]