217378431

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{171299}}^1$

素因数の和:171355

約数の個数: 16

約数和(自身を含む): 328896000

約数和(自身を除く): 111517569

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 171299, 513897, 1541691, 4625073, 8051053, 24153159, 72459477, 217378431]

約数ペア:

[(1, 217378431), (3, 72459477), (9, 24153159), (27, 8051053), (47, 4625073), (141, 1541691), (423, 513897), (1269, 171299)]