20013399

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{751}}^1$

素因数の和:817

約数の個数: 40

約数和(自身を含む): 34940928

約数和(自身を除く): 14927529

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 751, 987, 1269, 2253, 2961, 3807, 5257, 6759, 8883, 15771, 20277, 26649, 35297, 47313, 60831, 105891, 141939, 247079, 317673, 425817, 741237, 953019, 2223711, 2859057, 6671133, 20013399]

約数ペア:

[(1, 20013399), (3, 6671133), (7, 2859057), (9, 2223711), (21, 953019), (27, 741237), (47, 425817), (63, 317673), (81, 247079), (141, 141939), (189, 105891), (329, 60831), (423, 47313), (567, 35297), (751, 26649), (987, 20277), (1269, 15771), (2253, 8883), (2961, 6759), (3807, 5257)]