217202391

素因数分解:

$3^5\times 7^1\times {\mathrm{127691}}^1$

素因数の和:127713

約数の個数: 24

約数和(自身を含む): 371839104

約数和(自身を除く): 154636713

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 127691, 383073, 893837, 1149219, 2681511, 3447657, 8044533, 10342971, 24133599, 31028913, 72400797, 217202391]

約数ペア:

[(1, 217202391), (3, 72400797), (7, 31028913), (9, 24133599), (21, 10342971), (27, 8044533), (63, 3447657), (81, 2681511), (189, 1149219), (243, 893837), (567, 383073), (1701, 127691)]