28508711720

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{10637579}}^1$

素因数の和:10637657

約数の個数: 32

約数和(自身を含む): 65101989600

約数和(自身を除く): 36593277880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 10637579, 21275158, 42550316, 53187895, 85100632, 106375790, 212751580, 425503160, 712717793, 1425435586, 2850871172, 3563588965, 5701742344, 7127177930, 14254355860, 28508711720]

約数ペア:

[(1, 28508711720), (2, 14254355860), (4, 7127177930), (5, 5701742344), (8, 3563588965), (10, 2850871172), (20, 1425435586), (40, 712717793), (67, 425503160), (134, 212751580), (268, 106375790), (335, 85100632), (536, 53187895), (670, 42550316), (1340, 21275158), (2680, 10637579)]