128418129

素因数分解:

$3^4\times 7^1\times {\mathrm{226487}}^1$

素因数の和:226506

約数の個数: 20

約数和(自身を含む): 219240384

約数和(自身を除く): 90822255

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 226487, 679461, 1585409, 2038383, 4756227, 6115149, 14268681, 18345447, 42806043, 128418129]

約数ペア:

[(1, 128418129), (3, 42806043), (7, 18345447), (9, 14268681), (21, 6115149), (27, 4756227), (63, 2038383), (81, 1585409), (189, 679461), (567, 226487)]