681028155

素因数分解:

$3^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{727}}^1$

素因数の和:1007

約数の個数: 56

約数和(自身を含む): 1231749792

約数和(自身を除く): 550721637

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 257, 405, 727, 729, 771, 1215, 1285, 2181, 2313, 3635, 3645, 3855, 6543, 6939, 10905, 11565, 19629, 20817, 32715, 34695, 58887, 62451, 98145, 104085, 176661, 186839, 187353, 294435, 312255, 529983, 560517, 883305, 934195, 936765, 1681551, 2649915, 2802585, 5044653, 8407755, 15133959, 25223265, 45401877, 75669795, 136205631, 227009385, 681028155]

約数ペア:

[(1, 681028155), (3, 227009385), (5, 136205631), (9, 75669795), (15, 45401877), (27, 25223265), (45, 15133959), (81, 8407755), (135, 5044653), (243, 2802585), (257, 2649915), (405, 1681551), (727, 936765), (729, 934195), (771, 883305), (1215, 560517), (1285, 529983), (2181, 312255), (2313, 294435), (3635, 187353), (3645, 186839), (3855, 176661), (6543, 104085), (6939, 98145), (10905, 62451), (11565, 58887), (19629, 34695), (20817, 32715)]