21780971523

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{1693}}^1\times {\mathrm{9343}}^1$

素因数の和:11065

約数の個数: 40

約数和(自身を含む): 34474987008

約数和(自身を除く): 12694015485

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 1693, 5079, 9343, 15237, 28029, 28781, 45711, 84087, 86343, 137133, 158831, 252261, 259029, 476493, 756783, 777087, 1429479, 2331261, 4288437, 12865311, 15817699, 47453097, 142359291, 268900883, 427077873, 806702649, 1281233619, 2420107947, 7260323841, 21780971523]

約数ペア:

[(1, 21780971523), (3, 7260323841), (9, 2420107947), (17, 1281233619), (27, 806702649), (51, 427077873), (81, 268900883), (153, 142359291), (459, 47453097), (1377, 15817699), (1693, 12865311), (5079, 4288437), (9343, 2331261), (15237, 1429479), (28029, 777087), (28781, 756783), (45711, 476493), (84087, 259029), (86343, 252261), (137133, 158831)]