19678707

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:521

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 12520845

約数列:

[1, 3, 9, 17, 27, 31, 51, 81, 93, 153, 279, 459, 461, 527, 837, 1377, 1383, 1581, 2511, 4149, 4743, 7837, 12447, 14229, 14291, 23511, 37341, 42687, 42873, 70533, 128619, 211599, 242947, 385857, 634797, 728841, 1157571, 2186523, 6559569, 19678707]

約数ペア:

[(1, 19678707), (3, 6559569), (9, 2186523), (17, 1157571), (27, 728841), (31, 634797), (51, 385857), (81, 242947), (93, 211599), (153, 128619), (279, 70533), (459, 42873), (461, 42687), (527, 37341), (837, 23511), (1377, 14291), (1383, 14229), (1581, 12447), (2511, 7837), (4149, 4743)]