17991729

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 31943808

約数和(自身を除く): 13952079

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 107, 119, 153, 157, 321, 357, 471, 749, 963, 1071, 1099, 1413, 1819, 2247, 2669, 3297, 5457, 6741, 8007, 9891, 12733, 16371, 16799, 18683, 24021, 38199, 50397, 56049, 114597, 117593, 151191, 168147, 285583, 352779, 856749, 1058337, 1999081, 2570247, 5997243, 17991729]

約数ペア:

[(1, 17991729), (3, 5997243), (7, 2570247), (9, 1999081), (17, 1058337), (21, 856749), (51, 352779), (63, 285583), (107, 168147), (119, 151191), (153, 117593), (157, 114597), (321, 56049), (357, 50397), (471, 38199), (749, 24021), (963, 18683), (1071, 16799), (1099, 16371), (1413, 12733), (1819, 9891), (2247, 8007), (2669, 6741), (3297, 5457)]