20404995

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 14975805

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 269, 389, 807, 1167, 1345, 1945, 3497, 4035, 5057, 5835, 10491, 15171, 17485, 25285, 52455, 75855, 104641, 313923, 523205, 1360333, 1569615, 4080999, 6801665, 20404995]

約数ペア:

[(1, 20404995), (3, 6801665), (5, 4080999), (13, 1569615), (15, 1360333), (39, 523205), (65, 313923), (195, 104641), (269, 75855), (389, 52455), (807, 25285), (1167, 17485), (1345, 15171), (1945, 10491), (3497, 5835), (4035, 5057)]