20381274

素因数分解:

$2^1\times 3^3\times {\mathrm{571}}^1\times {\mathrm{661}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 45439680

約数和(自身を除く): 25058406

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 571, 661, 1142, 1322, 1713, 1983, 3426, 3966, 5139, 5949, 10278, 11898, 15417, 17847, 30834, 35694, 377431, 754862, 1132293, 2264586, 3396879, 6793758, 10190637, 20381274]

約数ペア:

[(1, 20381274), (2, 10190637), (3, 6793758), (6, 3396879), (9, 2264586), (18, 1132293), (27, 754862), (54, 377431), (571, 35694), (661, 30834), (1142, 17847), (1322, 15417), (1713, 11898), (1983, 10278), (3426, 5949), (3966, 5139)]