1990980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{1229}}^1$

素因数の和:1250

約数の個数: 60

約数和(自身を含む): 6250860

約数和(自身を除く): 4259880

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1229, 1620, 2458, 3687, 4916, 6145, 7374, 11061, 12290, 14748, 18435, 22122, 24580, 33183, 36870, 44244, 55305, 66366, 73740, 99549, 110610, 132732, 165915, 199098, 221220, 331830, 398196, 497745, 663660, 995490, 1990980]

約数ペア:

[(1, 1990980), (2, 995490), (3, 663660), (4, 497745), (5, 398196), (6, 331830), (9, 221220), (10, 199098), (12, 165915), (15, 132732), (18, 110610), (20, 99549), (27, 73740), (30, 66366), (36, 55305), (45, 44244), (54, 36870), (60, 33183), (81, 24580), (90, 22122), (108, 18435), (135, 14748), (162, 12290), (180, 11061), (270, 7374), (324, 6145), (405, 4916), (540, 3687), (810, 2458), (1229, 1620)]