21000209013

素因数分解:

$3^3\times 7^1\times {\mathrm{439}}^1\times {\mathrm{253103}}^1$

素因数の和:253558

約数の個数: 32

約数和(自身を含む): 35637043200

約数和(自身を除く): 14636834187

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 439, 1317, 3073, 3951, 9219, 11853, 27657, 82971, 253103, 759309, 1771721, 2277927, 5315163, 6833781, 15945489, 47836467, 111112217, 333336651, 777785519, 1000009953, 2333356557, 3000029859, 7000069671, 21000209013]

約数ペア:

[(1, 21000209013), (3, 7000069671), (7, 3000029859), (9, 2333356557), (21, 1000009953), (27, 777785519), (63, 333336651), (189, 111112217), (439, 47836467), (1317, 15945489), (3073, 6833781), (3951, 5315163), (9219, 2277927), (11853, 1771721), (27657, 759309), (82971, 253103)]