19976787

素因数分解:

$3^6\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:494

約数の個数: 28

約数和(自身を含む): 30472840

約数和(自身を除く): 10496053

約数列:

[1, 3, 9, 27, 67, 81, 201, 243, 409, 603, 729, 1227, 1809, 3681, 5427, 11043, 16281, 27403, 33129, 48843, 82209, 99387, 246627, 298161, 739881, 2219643, 6658929, 19976787]

約数ペア:

[(1, 19976787), (3, 6658929), (9, 2219643), (27, 739881), (67, 298161), (81, 246627), (201, 99387), (243, 82209), (409, 48843), (603, 33129), (729, 27403), (1227, 16281), (1809, 11043), (3681, 5427)]