87208990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1997}}^1$

素因数の和:2412

約数の個数: 32

約数和(自身を含む): 171764064

約数和(自身を除く): 84555074

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 397, 794, 1985, 1997, 3970, 3994, 4367, 8734, 9985, 19970, 21835, 21967, 43670, 43934, 109835, 219670, 792809, 1585618, 3964045, 7928090, 8720899, 17441798, 43604495, 87208990]

約数ペア:

[(1, 87208990), (2, 43604495), (5, 17441798), (10, 8720899), (11, 7928090), (22, 3964045), (55, 1585618), (110, 792809), (397, 219670), (794, 109835), (1985, 43934), (1997, 43670), (3970, 21967), (3994, 21835), (4367, 19970), (8734, 9985)]