221657289

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{199153}}^1$

素因数の和:199216

約数の個数: 16

約数和(自身を含む): 344138112

約数和(自身を除く): 122480823

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 199153, 597459, 1394071, 4182213, 10555109, 31665327, 73885763, 221657289]

約数ペア:

[(1, 221657289), (3, 73885763), (7, 31665327), (21, 10555109), (53, 4182213), (159, 1394071), (371, 597459), (1113, 199153)]