21726568

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1425

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21041432

約数列:

[1, 2, 4, 8, 29, 58, 71, 116, 142, 232, 284, 568, 1319, 2059, 2638, 4118, 5276, 8236, 10552, 16472, 38251, 76502, 93649, 153004, 187298, 306008, 374596, 749192, 2715821, 5431642, 10863284, 21726568]

約数ペア:

[(1, 21726568), (2, 10863284), (4, 5431642), (8, 2715821), (29, 749192), (58, 374596), (71, 306008), (116, 187298), (142, 153004), (232, 93649), (284, 76502), (568, 38251), (1319, 16472), (2059, 10552), (2638, 8236), (4118, 5276)]