20496021

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 33895680

約数和(自身を除く): 13399659

約数列:

[1, 3, 7, 13, 21, 39, 91, 193, 273, 389, 579, 1167, 1351, 2509, 2723, 4053, 5057, 7527, 8169, 15171, 17563, 35399, 52689, 75077, 106197, 225231, 525539, 976001, 1576617, 2928003, 6832007, 20496021]

約数ペア:

[(1, 20496021), (3, 6832007), (7, 2928003), (13, 1576617), (21, 976001), (39, 525539), (91, 225231), (193, 106197), (273, 75077), (389, 52689), (579, 35399), (1167, 17563), (1351, 15171), (2509, 8169), (2723, 7527), (4053, 5057)]