18970469

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 23358720

約数和(自身を除く): 4388251

約数列:

[1, 7, 23, 47, 109, 161, 329, 529, 763, 1081, 2507, 3703, 5123, 7567, 17549, 24863, 35861, 57661, 117829, 174041, 403627, 824803, 2710067, 18970469]

約数ペア:

[(1, 18970469), (7, 2710067), (23, 824803), (47, 403627), (109, 174041), (161, 117829), (329, 57661), (529, 35861), (763, 24863), (1081, 17549), (2507, 7567), (3703, 5123)]