28564780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21317}}^1$

素因数の和:21393

約数の個数: 24

約数和(自身を含む): 60884208

約数和(自身を除く): 32319428

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21317, 42634, 85268, 106585, 213170, 426340, 1428239, 2856478, 5712956, 7141195, 14282390, 28564780]

約数ペア:

[(1, 28564780), (2, 14282390), (4, 7141195), (5, 5712956), (10, 2856478), (20, 1428239), (67, 426340), (134, 213170), (268, 106585), (335, 85268), (670, 42634), (1340, 21317)]