31238739

素因数分解:

$3^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1249}}^1$

素因数の和:1659

約数の個数: 24

約数和(自身を含む): 51740000

約数和(自身を除く): 20501261

約数列:

[1, 3, 7, 9, 21, 63, 397, 1191, 1249, 2779, 3573, 3747, 8337, 8743, 11241, 25011, 26229, 78687, 495853, 1487559, 3470971, 4462677, 10412913, 31238739]

約数ペア:

[(1, 31238739), (3, 10412913), (7, 4462677), (9, 3470971), (21, 1487559), (63, 495853), (397, 78687), (1191, 26229), (1249, 25011), (2779, 11241), (3573, 8743), (3747, 8337)]