1990020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1951}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 5902848

約数和(自身を除く): 3912828

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 1951, 3902, 5853, 7804, 9755, 11706, 19510, 23412, 29265, 33167, 39020, 58530, 66334, 99501, 117060, 132668, 165835, 199002, 331670, 398004, 497505, 663340, 995010, 1990020]

約数ペア:

[(1, 1990020), (2, 995010), (3, 663340), (4, 497505), (5, 398004), (6, 331670), (10, 199002), (12, 165835), (15, 132668), (17, 117060), (20, 99501), (30, 66334), (34, 58530), (51, 39020), (60, 33167), (68, 29265), (85, 23412), (102, 19510), (170, 11706), (204, 9755), (255, 7804), (340, 5853), (510, 3902), (1020, 1951)]