21379968009

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{181243}}^1$

素因数の和:181526

約数の個数: 32

約数和(自身を含む): 33667885440

約数和(自身を除く): 12287917431

約数列:

[1, 3, 9, 17, 27, 51, 153, 257, 459, 771, 2313, 4369, 6939, 13107, 39321, 117963, 181243, 543729, 1631187, 3081131, 4893561, 9243393, 27730179, 46579451, 83190537, 139738353, 419215059, 791850667, 1257645177, 2375552001, 7126656003, 21379968009]

約数ペア:

[(1, 21379968009), (3, 7126656003), (9, 2375552001), (17, 1257645177), (27, 791850667), (51, 419215059), (153, 139738353), (257, 83190537), (459, 46579451), (771, 27730179), (2313, 9243393), (4369, 4893561), (6939, 3081131), (13107, 1631187), (39321, 543729), (117963, 181243)]