1991790

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{2459}}^1$

素因数の和:2478

約数の個数: 40

約数和(自身を含む): 5357880

約数和(自身を除く): 3366090

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 2459, 4918, 7377, 12295, 14754, 22131, 24590, 36885, 44262, 66393, 73770, 110655, 132786, 199179, 221310, 331965, 398358, 663930, 995895, 1991790]

約数ペア:

[(1, 1991790), (2, 995895), (3, 663930), (5, 398358), (6, 331965), (9, 221310), (10, 199179), (15, 132786), (18, 110655), (27, 73770), (30, 66393), (45, 44262), (54, 36885), (81, 24590), (90, 22131), (135, 14754), (162, 12295), (270, 7377), (405, 4918), (810, 2459)]