218901991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^2$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 277167744

約数和(自身を除く): 58265753

約数列:

[1, 7, 11, 77, 107, 163, 749, 1141, 1177, 1793, 8239, 12551, 17441, 26569, 122087, 185983, 191851, 292259, 1342957, 2045813, 2842883, 19900181, 31271713, 218901991]

約数ペア:

[(1, 218901991), (7, 31271713), (11, 19900181), (77, 2842883), (107, 2045813), (163, 1342957), (749, 292259), (1141, 191851), (1177, 185983), (1793, 122087), (8239, 26569), (12551, 17441)]