261799689

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 374169600

約数和(自身を除く): 112369911

約数列:

[1, 3, 19, 57, 139, 173, 191, 417, 519, 573, 2641, 3287, 3629, 7923, 9861, 10887, 24047, 26549, 33043, 72141, 79647, 99129, 456893, 504431, 627817, 1370679, 1513293, 1883451, 4592977, 13778931, 87266563, 261799689]

約数ペア:

[(1, 261799689), (3, 87266563), (19, 13778931), (57, 4592977), (139, 1883451), (173, 1513293), (191, 1370679), (417, 627817), (519, 504431), (573, 456893), (2641, 99129), (3287, 79647), (3629, 72141), (7923, 33043), (9861, 26549), (10887, 24047)]