9881919

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6452

約数の個数: 20

約数和(自身を含む): 15541240

約数和(自身を除く): 5659321

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 6421, 19263, 57789, 121999, 173367, 365997, 520101, 1097991, 3293973, 9881919]

約数ペア:

[(1, 9881919), (3, 3293973), (9, 1097991), (19, 520101), (27, 365997), (57, 173367), (81, 121999), (171, 57789), (513, 19263), (1539, 6421)]