640596

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 1709568

約数和(自身を除く): 1068972

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 23, 33, 44, 46, 66, 69, 92, 132, 138, 211, 253, 276, 422, 506, 633, 759, 844, 1012, 1266, 1518, 2321, 2532, 3036, 4642, 4853, 6963, 9284, 9706, 13926, 14559, 19412, 27852, 29118, 53383, 58236, 106766, 160149, 213532, 320298, 640596]

約数ペア:

[(1, 640596), (2, 320298), (3, 213532), (4, 160149), (6, 106766), (11, 58236), (12, 53383), (22, 29118), (23, 27852), (33, 19412), (44, 14559), (46, 13926), (66, 9706), (69, 9284), (92, 6963), (132, 4853), (138, 4642), (211, 3036), (253, 2532), (276, 2321), (422, 1518), (506, 1266), (633, 1012), (759, 844)]