18008910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{499}}^1$

素因数の和:913

約数の個数: 48

約数和(自身を含む): 47034000

約数和(自身を除く): 29025090

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 401, 499, 802, 998, 1203, 1497, 2005, 2406, 2495, 2994, 3609, 4010, 4491, 4990, 6015, 7218, 7485, 8982, 12030, 14970, 18045, 22455, 36090, 44910, 200099, 400198, 600297, 1000495, 1200594, 1800891, 2000990, 3001485, 3601782, 6002970, 9004455, 18008910]

約数ペア:

[(1, 18008910), (2, 9004455), (3, 6002970), (5, 3601782), (6, 3001485), (9, 2000990), (10, 1800891), (15, 1200594), (18, 1000495), (30, 600297), (45, 400198), (90, 200099), (401, 44910), (499, 36090), (802, 22455), (998, 18045), (1203, 14970), (1497, 12030), (2005, 8982), (2406, 7485), (2495, 7218), (2994, 6015), (3609, 4990), (4010, 4491)]