18218369

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:201

約数の個数: 24

約数和(自身を含む): 21257280

約数和(自身を除く): 3038911

約数列:

[1, 13, 23, 43, 109, 169, 299, 559, 989, 1417, 2507, 3887, 4687, 7267, 12857, 18421, 32591, 60931, 107801, 167141, 423683, 792103, 1401413, 18218369]

約数ペア:

[(1, 18218369), (13, 1401413), (23, 792103), (43, 423683), (109, 167141), (169, 107801), (299, 60931), (559, 32591), (989, 18421), (1417, 12857), (2507, 7267), (3887, 4687)]