12880005

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1051}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 22218240

約数和(自身を除く): 9338235

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 1051, 2451, 3153, 4085, 5255, 12255, 15765, 19969, 45193, 59907, 99845, 135579, 225965, 299535, 677895, 858667, 2576001, 4293335, 12880005]

約数ペア:

[(1, 12880005), (3, 4293335), (5, 2576001), (15, 858667), (19, 677895), (43, 299535), (57, 225965), (95, 135579), (129, 99845), (215, 59907), (285, 45193), (645, 19969), (817, 15765), (1051, 12255), (2451, 5255), (3153, 4085)]