20951487

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{12721}}^1$

素因数の和:12791

約数の個数: 16

約数和(自身を含む): 31550560

約数和(自身を除く): 10599073

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 12721, 38163, 114489, 343467, 775981, 2327943, 6983829, 20951487]

約数ペア:

[(1, 20951487), (3, 6983829), (9, 2327943), (27, 775981), (61, 343467), (183, 114489), (549, 38163), (1647, 12721)]