81997167

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1\times {\mathrm{227}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 127475712

約数和(自身を除く): 45478545

約数列:

[1, 3, 7, 21, 103, 167, 227, 309, 501, 681, 721, 1169, 1589, 2163, 3507, 4767, 17201, 23381, 37909, 51603, 70143, 113727, 120407, 163667, 265363, 361221, 491001, 796089, 3904627, 11713881, 27332389, 81997167]

約数ペア:

[(1, 81997167), (3, 27332389), (7, 11713881), (21, 3904627), (103, 796089), (167, 491001), (227, 361221), (309, 265363), (501, 163667), (681, 120407), (721, 113727), (1169, 70143), (1589, 51603), (2163, 37909), (3507, 23381), (4767, 17201)]