18947817

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3457}}^1$

素因数の和:3502

約数の個数: 32

約数和(自身を含む): 33196800

約数和(自身を除く): 14248983

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3457, 5481, 10371, 24199, 31113, 72597, 93339, 100253, 217791, 300759, 653373, 701771, 902277, 2105313, 2706831, 6315939, 18947817]

約数ペア:

[(1, 18947817), (3, 6315939), (7, 2706831), (9, 2105313), (21, 902277), (27, 701771), (29, 653373), (63, 300759), (87, 217791), (189, 100253), (203, 93339), (261, 72597), (609, 31113), (783, 24199), (1827, 10371), (3457, 5481)]