251105913

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1059

約数の個数: 40

約数和(自身を含む): 388903680

約数和(自身を除く): 137797767

約数列:

[1, 3, 9, 27, 47, 71, 81, 141, 213, 423, 639, 929, 1269, 1917, 2787, 3337, 3807, 5751, 8361, 10011, 25083, 30033, 43663, 65959, 75249, 90099, 130989, 197877, 270297, 392967, 593631, 1178901, 1780893, 3100073, 3536703, 5342679, 9300219, 27900657, 83701971, 251105913]

約数ペア:

[(1, 251105913), (3, 83701971), (9, 27900657), (27, 9300219), (47, 5342679), (71, 3536703), (81, 3100073), (141, 1780893), (213, 1178901), (423, 593631), (639, 392967), (929, 270297), (1269, 197877), (1917, 130989), (2787, 90099), (3337, 75249), (3807, 65959), (5751, 43663), (8361, 30033), (10011, 25083)]