20311277

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 26417664

約数和(自身を除く): 6106387

約数列:

[1, 7, 17, 23, 41, 119, 161, 181, 287, 391, 697, 943, 1267, 2737, 3077, 4163, 4879, 6601, 7421, 16031, 21539, 29141, 51947, 70771, 112217, 126157, 170683, 495397, 883099, 1194781, 2901611, 20311277]

約数ペア:

[(1, 20311277), (7, 2901611), (17, 1194781), (23, 883099), (41, 495397), (119, 170683), (161, 126157), (181, 112217), (287, 70771), (391, 51947), (697, 29141), (943, 21539), (1267, 16031), (2737, 7421), (3077, 6601), (4163, 4879)]