18654040

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4127}}^1$

素因数の和:4251

約数の個数: 32

約数和(自身を含む): 42353280

約数和(自身を除く): 23699240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4127, 4520, 8254, 16508, 20635, 33016, 41270, 82540, 165080, 466351, 932702, 1865404, 2331755, 3730808, 4663510, 9327020, 18654040]

約数ペア:

[(1, 18654040), (2, 9327020), (4, 4663510), (5, 3730808), (8, 2331755), (10, 1865404), (20, 932702), (40, 466351), (113, 165080), (226, 82540), (452, 41270), (565, 33016), (904, 20635), (1130, 16508), (2260, 8254), (4127, 4520)]