21056580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{116981}}^1$

素因数の和:116996

約数の個数: 36

約数和(自身を含む): 63872172

約数和(自身を除く): 42815592

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 116981, 233962, 350943, 467924, 584905, 701886, 1052829, 1169810, 1403772, 1754715, 2105658, 2339620, 3509430, 4211316, 5264145, 7018860, 10528290, 21056580]

約数ペア:

[(1, 21056580), (2, 10528290), (3, 7018860), (4, 5264145), (5, 4211316), (6, 3509430), (9, 2339620), (10, 2105658), (12, 1754715), (15, 1403772), (18, 1169810), (20, 1052829), (30, 701886), (36, 584905), (45, 467924), (60, 350943), (90, 233962), (180, 116981)]