21293041

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 27878400

約数和(自身を除く): 6585359

約数列:

[1, 7, 11, 43, 59, 77, 109, 301, 413, 473, 649, 763, 1199, 2537, 3311, 4543, 4687, 6431, 8393, 17759, 27907, 32809, 45017, 51557, 70741, 195349, 276533, 360899, 495187, 1935731, 3041863, 21293041]

約数ペア:

[(1, 21293041), (7, 3041863), (11, 1935731), (43, 495187), (59, 360899), (77, 276533), (109, 195349), (301, 70741), (413, 51557), (473, 45017), (649, 32809), (763, 27907), (1199, 17759), (2537, 8393), (3311, 6431), (4543, 4687)]