20123740220

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2586599}}^1$

素因数の和:2586997

約数の個数: 24

約数和(自身を含む): 42368508000

約数和(自身を除く): 22244767780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 2586599, 5173198, 10346396, 12932995, 25865990, 51731980, 1006187011, 2012374022, 4024748044, 5030935055, 10061870110, 20123740220]

約数ペア:

[(1, 20123740220), (2, 10061870110), (4, 5030935055), (5, 4024748044), (10, 2012374022), (20, 1006187011), (389, 51731980), (778, 25865990), (1556, 12932995), (1945, 10346396), (3890, 5173198), (7780, 2586599)]