641245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:236

約数の個数: 16

約数和(自身を含む): 855360

約数和(自身を除く): 214115

約数列:

[1, 5, 11, 55, 89, 131, 445, 655, 979, 1441, 4895, 7205, 11659, 58295, 128249, 641245]

約数ペア:

[(1, 641245), (5, 128249), (11, 58295), (55, 11659), (89, 7205), (131, 4895), (445, 1441), (655, 979)]