19980018

素因数分解:

$2^1\times 3^2\times {\mathrm{151}}^1\times {\mathrm{7351}}^1$

素因数の和:7510

約数の個数: 24

約数和(自身を含む): 43582656

約数和(自身を除く): 23602638

約数列:

[1, 2, 3, 6, 9, 18, 151, 302, 453, 906, 1359, 2718, 7351, 14702, 22053, 44106, 66159, 132318, 1110001, 2220002, 3330003, 6660006, 9990009, 19980018]

約数ペア:

[(1, 19980018), (2, 9990009), (3, 6660006), (6, 3330003), (9, 2220002), (18, 1110001), (151, 132318), (302, 66159), (453, 44106), (906, 22053), (1359, 14702), (2718, 7351)]