17666840

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{997}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 39880080

約数和(自身を除く): 22213240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 997, 1772, 1994, 2215, 3544, 3988, 4430, 4985, 7976, 8860, 9970, 17720, 19940, 39880, 441671, 883342, 1766684, 2208355, 3533368, 4416710, 8833420, 17666840]

約数ペア:

[(1, 17666840), (2, 8833420), (4, 4416710), (5, 3533368), (8, 2208355), (10, 1766684), (20, 883342), (40, 441671), (443, 39880), (886, 19940), (997, 17720), (1772, 9970), (1994, 8860), (2215, 7976), (3544, 4985), (3988, 4430)]