20978714

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 35199360

約数和(自身を除く): 14220646

約数列:

[1, 2, 17, 23, 34, 46, 139, 193, 278, 386, 391, 782, 2363, 3197, 3281, 4439, 4726, 6394, 6562, 8878, 26827, 53654, 54349, 75463, 108698, 150926, 456059, 617021, 912118, 1234042, 10489357, 20978714]

約数ペア:

[(1, 20978714), (2, 10489357), (17, 1234042), (23, 912118), (34, 617021), (46, 456059), (139, 150926), (193, 108698), (278, 75463), (386, 54349), (391, 53654), (782, 26827), (2363, 8878), (3197, 6562), (3281, 6394), (4439, 4726)]