211507205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2687}}^1$

素因数の和:2885

約数の個数: 32

約数和(自身を含む): 314302464

約数和(自身を除く): 102795259

約数列:

[1, 5, 7, 13, 35, 65, 91, 173, 455, 865, 1211, 2249, 2687, 6055, 11245, 13435, 15743, 18809, 34931, 78715, 94045, 174655, 244517, 464851, 1222585, 2324255, 3253957, 6043063, 16269785, 30215315, 42301441, 211507205]

約数ペア:

[(1, 211507205), (5, 42301441), (7, 30215315), (13, 16269785), (35, 6043063), (65, 3253957), (91, 2324255), (173, 1222585), (455, 464851), (865, 244517), (1211, 174655), (2249, 94045), (2687, 78715), (6055, 34931), (11245, 18809), (13435, 15743)]