20197241379

素因数分解:

$3^4\times 7^1\times {\mathrm{337}}^1\times {\mathrm{105701}}^1$

素因数の和:106057

約数の個数: 40

約数和(自身を含む): 34584003168

約数和(自身を除く): 14386761789

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 337, 567, 1011, 2359, 3033, 7077, 9099, 21231, 27297, 63693, 105701, 191079, 317103, 739907, 951309, 2219721, 2853927, 6659163, 8561781, 19977489, 35621237, 59932467, 106863711, 249348659, 320591133, 748045977, 961773399, 2244137931, 2885320197, 6732413793, 20197241379]

約数ペア:

[(1, 20197241379), (3, 6732413793), (7, 2885320197), (9, 2244137931), (21, 961773399), (27, 748045977), (63, 320591133), (81, 249348659), (189, 106863711), (337, 59932467), (567, 35621237), (1011, 19977489), (2359, 8561781), (3033, 6659163), (7077, 2853927), (9099, 2219721), (21231, 951309), (27297, 739907), (63693, 317103), (105701, 191079)]