21678660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4153}}^1$

素因数の和:4197

約数の個数: 72

約数和(自身を含む): 68042520

約数和(自身を除く): 46363860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4153, 5220, 8306, 12459, 16612, 20765, 24918, 37377, 41530, 49836, 62295, 74754, 83060, 120437, 124590, 149508, 186885, 240874, 249180, 361311, 373770, 481748, 602185, 722622, 747540, 1083933, 1204370, 1445244, 1806555, 2167866, 2408740, 3613110, 4335732, 5419665, 7226220, 10839330, 21678660]

約数ペア:

[(1, 21678660), (2, 10839330), (3, 7226220), (4, 5419665), (5, 4335732), (6, 3613110), (9, 2408740), (10, 2167866), (12, 1806555), (15, 1445244), (18, 1204370), (20, 1083933), (29, 747540), (30, 722622), (36, 602185), (45, 481748), (58, 373770), (60, 361311), (87, 249180), (90, 240874), (116, 186885), (145, 149508), (174, 124590), (180, 120437), (261, 83060), (290, 74754), (348, 62295), (435, 49836), (522, 41530), (580, 37377), (870, 24918), (1044, 20765), (1305, 16612), (1740, 12459), (2610, 8306), (4153, 5220)]