81172028

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:415

約数の個数: 72

約数和(自身を含む): 176964480

約数和(自身を除く): 95792452

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 71, 76, 98, 133, 142, 196, 266, 284, 307, 497, 532, 614, 931, 994, 1228, 1349, 1862, 1988, 2149, 2698, 3479, 3724, 4298, 5396, 5833, 6958, 8596, 9443, 11666, 13916, 15043, 18886, 21797, 23332, 30086, 37772, 40831, 43594, 60172, 66101, 81662, 87188, 132202, 152579, 163324, 264404, 285817, 305158, 414143, 571634, 610316, 828286, 1068053, 1143268, 1656572, 2136106, 2899001, 4272212, 5798002, 11596004, 20293007, 40586014, 81172028]

約数ペア:

[(1, 81172028), (2, 40586014), (4, 20293007), (7, 11596004), (14, 5798002), (19, 4272212), (28, 2899001), (38, 2136106), (49, 1656572), (71, 1143268), (76, 1068053), (98, 828286), (133, 610316), (142, 571634), (196, 414143), (266, 305158), (284, 285817), (307, 264404), (497, 163324), (532, 152579), (614, 132202), (931, 87188), (994, 81662), (1228, 66101), (1349, 60172), (1862, 43594), (1988, 40831), (2149, 37772), (2698, 30086), (3479, 23332), (3724, 21797), (4298, 18886), (5396, 15043), (5833, 13916), (6958, 11666), (8596, 9443)]