1990305

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 32

約数和(自身を含む): 3697920

約数和(自身を除く): 1707615

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 641, 1035, 1923, 3105, 3205, 5769, 9615, 14743, 17307, 28845, 44229, 73715, 86535, 132687, 221145, 398061, 663435, 1990305]

約数ペア:

[(1, 1990305), (3, 663435), (5, 398061), (9, 221145), (15, 132687), (23, 86535), (27, 73715), (45, 44229), (69, 28845), (115, 17307), (135, 14743), (207, 9615), (345, 5769), (621, 3205), (641, 3105), (1035, 1923)]