19218199

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 26256384

約数和(自身を除く): 7038185

約数列:

[1, 7, 11, 13, 73, 77, 91, 143, 263, 511, 803, 949, 1001, 1841, 2893, 3419, 5621, 6643, 10439, 19199, 20251, 23933, 37609, 73073, 134393, 211189, 249587, 263263, 1478323, 1747109, 2745457, 19218199]

約数ペア:

[(1, 19218199), (7, 2745457), (11, 1747109), (13, 1478323), (73, 263263), (77, 249587), (91, 211189), (143, 134393), (263, 73073), (511, 37609), (803, 23933), (949, 20251), (1001, 19199), (1841, 10439), (2893, 6643), (3419, 5621)]