218210517

素因数分解:

$3^4\times 7^1\times {\mathrm{384851}}^1$

素因数の和:384870

約数の個数: 20

約数和(自身を含む): 372536736

約数和(自身を除く): 154326219

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 384851, 1154553, 2693957, 3463659, 8081871, 10390977, 24245613, 31172931, 72736839, 218210517]

約数ペア:

[(1, 218210517), (3, 72736839), (7, 31172931), (9, 24245613), (21, 10390977), (27, 8081871), (63, 3463659), (81, 2693957), (189, 1154553), (567, 384851)]