28293140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 61471872

約数和(自身を除く): 33178732

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 167, 172, 197, 215, 334, 394, 430, 668, 788, 835, 860, 985, 1670, 1970, 3340, 3940, 7181, 8471, 14362, 16942, 28724, 32899, 33884, 35905, 42355, 65798, 71810, 84710, 131596, 143620, 164495, 169420, 328990, 657980, 1414657, 2829314, 5658628, 7073285, 14146570, 28293140]

約数ペア:

[(1, 28293140), (2, 14146570), (4, 7073285), (5, 5658628), (10, 2829314), (20, 1414657), (43, 657980), (86, 328990), (167, 169420), (172, 164495), (197, 143620), (215, 131596), (334, 84710), (394, 71810), (430, 65798), (668, 42355), (788, 35905), (835, 33884), (860, 32899), (985, 28724), (1670, 16942), (1970, 14362), (3340, 8471), (3940, 7181)]