20870523

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 31116800

約数和(自身を除く): 10246277

約数列:

[1, 3, 9, 43, 129, 199, 271, 387, 597, 813, 1791, 2439, 8557, 11653, 25671, 34959, 53929, 77013, 104877, 161787, 485361, 2318947, 6956841, 20870523]

約数ペア:

[(1, 20870523), (3, 6956841), (9, 2318947), (43, 485361), (129, 161787), (199, 104877), (271, 77013), (387, 53929), (597, 34959), (813, 25671), (1791, 11653), (2439, 8557)]