21979064

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20356936

約数列:

[1, 2, 4, 8, 79, 83, 158, 166, 316, 332, 419, 632, 664, 838, 1676, 3352, 6557, 13114, 26228, 33101, 34777, 52456, 66202, 69554, 132404, 139108, 264808, 278216, 2747383, 5494766, 10989532, 21979064]

約数ペア:

[(1, 21979064), (2, 10989532), (4, 5494766), (8, 2747383), (79, 278216), (83, 264808), (158, 139108), (166, 132404), (316, 69554), (332, 66202), (419, 52456), (632, 34777), (664, 33101), (838, 26228), (1676, 13114), (3352, 6557)]