20476989

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{257}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 32941440

約数和(自身を除く): 12464451

約数列:

[1, 3, 9, 13, 27, 39, 117, 227, 257, 351, 681, 771, 2043, 2313, 2951, 3341, 6129, 6939, 8853, 10023, 26559, 30069, 58339, 79677, 90207, 175017, 525051, 758407, 1575153, 2275221, 6825663, 20476989]

約数ペア:

[(1, 20476989), (3, 6825663), (9, 2275221), (13, 1575153), (27, 758407), (39, 525051), (117, 175017), (227, 90207), (257, 79677), (351, 58339), (681, 30069), (771, 26559), (2043, 10023), (2313, 8853), (2951, 6939), (3341, 6129)]