31917951

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{409}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 53726400

約数和(自身を除く): 21808449

約数列:

[1, 3, 9, 13, 23, 29, 39, 69, 87, 117, 207, 261, 299, 377, 409, 667, 897, 1131, 1227, 2001, 2691, 3393, 3681, 5317, 6003, 8671, 9407, 11861, 15951, 26013, 28221, 35583, 47853, 78039, 84663, 106749, 122291, 154193, 272803, 366873, 462579, 818409, 1100619, 1387737, 2455227, 3546439, 10639317, 31917951]

約数ペア:

[(1, 31917951), (3, 10639317), (9, 3546439), (13, 2455227), (23, 1387737), (29, 1100619), (39, 818409), (69, 462579), (87, 366873), (117, 272803), (207, 154193), (261, 122291), (299, 106749), (377, 84663), (409, 78039), (667, 47853), (897, 35583), (1131, 28221), (1227, 26013), (2001, 15951), (2691, 11861), (3393, 9407), (3681, 8671), (5317, 6003)]