87653960

素因数分解:

$2^3\times 5^1\times {\mathrm{857}}^1\times {\mathrm{2557}}^1$

素因数の和:3425

約数の個数: 32

約数和(自身を含む): 197528760

約数和(自身を除く): 109874800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 857, 1714, 2557, 3428, 4285, 5114, 6856, 8570, 10228, 12785, 17140, 20456, 25570, 34280, 51140, 102280, 2191349, 4382698, 8765396, 10956745, 17530792, 21913490, 43826980, 87653960]

約数ペア:

[(1, 87653960), (2, 43826980), (4, 21913490), (5, 17530792), (8, 10956745), (10, 8765396), (20, 4382698), (40, 2191349), (857, 102280), (1714, 51140), (2557, 34280), (3428, 25570), (4285, 20456), (5114, 17140), (6856, 12785), (8570, 10228)]