81003993

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 126197760

約数和(自身を除く): 45193767

約数列:

[1, 3, 7, 21, 79, 157, 237, 311, 471, 553, 933, 1099, 1659, 2177, 3297, 6531, 12403, 24569, 37209, 48827, 73707, 86821, 146481, 171983, 260463, 341789, 515949, 1025367, 3857333, 11571999, 27001331, 81003993]

約数ペア:

[(1, 81003993), (3, 27001331), (7, 11571999), (21, 3857333), (79, 1025367), (157, 515949), (237, 341789), (311, 260463), (471, 171983), (553, 146481), (933, 86821), (1099, 73707), (1659, 48827), (2177, 37209), (3297, 24569), (6531, 12403)]