28165460

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21019}}^1$

素因数の和:21095

約数の個数: 24

約数和(自身を含む): 60033120

約数和(自身を除く): 31867660

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21019, 42038, 84076, 105095, 210190, 420380, 1408273, 2816546, 5633092, 7041365, 14082730, 28165460]

約数ペア:

[(1, 28165460), (2, 14082730), (4, 7041365), (5, 5633092), (10, 2816546), (20, 1408273), (67, 420380), (134, 210190), (268, 105095), (335, 84076), (670, 42038), (1340, 21019)]