81386172

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2543}}^1$

素因数の和:2687

約数の個数: 72

約数和(自身を含む): 237060096

約数和(自身を除く): 155673924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 127, 252, 254, 381, 508, 762, 889, 1143, 1524, 1778, 2286, 2543, 2667, 3556, 4572, 5086, 5334, 7629, 8001, 10172, 10668, 15258, 16002, 17801, 22887, 30516, 32004, 35602, 45774, 53403, 71204, 91548, 106806, 160209, 213612, 320418, 322961, 640836, 645922, 968883, 1291844, 1937766, 2260727, 2906649, 3875532, 4521454, 5813298, 6782181, 9042908, 11626596, 13564362, 20346543, 27128724, 40693086, 81386172]

約数ペア:

[(1, 81386172), (2, 40693086), (3, 27128724), (4, 20346543), (6, 13564362), (7, 11626596), (9, 9042908), (12, 6782181), (14, 5813298), (18, 4521454), (21, 3875532), (28, 2906649), (36, 2260727), (42, 1937766), (63, 1291844), (84, 968883), (126, 645922), (127, 640836), (252, 322961), (254, 320418), (381, 213612), (508, 160209), (762, 106806), (889, 91548), (1143, 71204), (1524, 53403), (1778, 45774), (2286, 35602), (2543, 32004), (2667, 30516), (3556, 22887), (4572, 17801), (5086, 16002), (5334, 15258), (7629, 10668), (8001, 10172)]