256516245

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{3371}}^1$

素因数の和:3490

約数の個数: 48

約数和(自身を含む): 473428800

約数和(自身を除く): 216912555

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 89, 95, 171, 267, 285, 445, 801, 855, 1335, 1691, 3371, 4005, 5073, 8455, 10113, 15219, 16855, 25365, 30339, 50565, 64049, 76095, 151695, 192147, 300019, 320245, 576441, 900057, 960735, 1500095, 2700171, 2882205, 4500285, 5700361, 13500855, 17101083, 28501805, 51303249, 85505415, 256516245]

約数ペア:

[(1, 256516245), (3, 85505415), (5, 51303249), (9, 28501805), (15, 17101083), (19, 13500855), (45, 5700361), (57, 4500285), (89, 2882205), (95, 2700171), (171, 1500095), (267, 960735), (285, 900057), (445, 576441), (801, 320245), (855, 300019), (1335, 192147), (1691, 151695), (3371, 76095), (4005, 64049), (5073, 50565), (8455, 30339), (10113, 25365), (15219, 16855)]