28255140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1987}}^1$

素因数の和:2081

約数の個数: 72

約数和(自身を含む): 86835840

約数和(自身を除く): 58580700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1580, 1987, 2370, 2844, 3555, 3974, 4740, 5961, 7110, 7948, 9935, 11922, 14220, 17883, 19870, 23844, 29805, 35766, 39740, 59610, 71532, 89415, 119220, 156973, 178830, 313946, 357660, 470919, 627892, 784865, 941838, 1412757, 1569730, 1883676, 2354595, 2825514, 3139460, 4709190, 5651028, 7063785, 9418380, 14127570, 28255140]

約数ペア:

[(1, 28255140), (2, 14127570), (3, 9418380), (4, 7063785), (5, 5651028), (6, 4709190), (9, 3139460), (10, 2825514), (12, 2354595), (15, 1883676), (18, 1569730), (20, 1412757), (30, 941838), (36, 784865), (45, 627892), (60, 470919), (79, 357660), (90, 313946), (158, 178830), (180, 156973), (237, 119220), (316, 89415), (395, 71532), (474, 59610), (711, 39740), (790, 35766), (948, 29805), (1185, 23844), (1422, 19870), (1580, 17883), (1987, 14220), (2370, 11922), (2844, 9935), (3555, 7948), (3974, 7110), (4740, 5961)]