18201620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2521}}^1$

素因数の和:2568

約数の個数: 36

約数和(自身を含む): 40357044

約数和(自身を除く): 22155424

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2521, 3610, 5042, 7220, 10084, 12605, 25210, 47899, 50420, 95798, 191596, 239495, 478990, 910081, 957980, 1820162, 3640324, 4550405, 9100810, 18201620]

約数ペア:

[(1, 18201620), (2, 9100810), (4, 4550405), (5, 3640324), (10, 1820162), (19, 957980), (20, 910081), (38, 478990), (76, 239495), (95, 191596), (190, 95798), (361, 50420), (380, 47899), (722, 25210), (1444, 12605), (1805, 10084), (2521, 7220), (3610, 5042)]