1981375

素因数分解:

$5^3\times {\mathrm{11}}^2\times {\mathrm{131}}^1$

素因数の和:168

約数の個数: 24

約数和(自身を含む): 2738736

約数和(自身を除く): 757361

約数列:

[1, 5, 11, 25, 55, 121, 125, 131, 275, 605, 655, 1375, 1441, 3025, 3275, 7205, 15125, 15851, 16375, 36025, 79255, 180125, 396275, 1981375]

約数ペア:

[(1, 1981375), (5, 396275), (11, 180125), (25, 79255), (55, 36025), (121, 16375), (125, 15851), (131, 15125), (275, 7205), (605, 3275), (655, 3025), (1375, 1441)]