81538020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{452989}}^1$

素因数の和:453004

約数の個数: 36

約数和(自身を含む): 247332540

約数和(自身を除く): 165794520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 452989, 905978, 1358967, 1811956, 2264945, 2717934, 4076901, 4529890, 5435868, 6794835, 8153802, 9059780, 13589670, 16307604, 20384505, 27179340, 40769010, 81538020]

約数ペア:

[(1, 81538020), (2, 40769010), (3, 27179340), (4, 20384505), (5, 16307604), (6, 13589670), (9, 9059780), (10, 8153802), (12, 6794835), (15, 5435868), (18, 4529890), (20, 4076901), (30, 2717934), (36, 2264945), (45, 1811956), (60, 1358967), (90, 905978), (180, 452989)]