19855881

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 11593719

約数列:

[1, 3, 9, 17, 27, 51, 153, 181, 239, 459, 543, 717, 1629, 2151, 3077, 4063, 4887, 6453, 9231, 12189, 27693, 36567, 43259, 83079, 109701, 129777, 389331, 735403, 1167993, 2206209, 6618627, 19855881]

約数ペア:

[(1, 19855881), (3, 6618627), (9, 2206209), (17, 1167993), (27, 735403), (51, 389331), (153, 129777), (181, 109701), (239, 83079), (459, 43259), (543, 36567), (717, 27693), (1629, 12189), (2151, 9231), (3077, 6453), (4063, 4887)]