639804537

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{1733}}^1$

素因数の和:1902

約数の個数: 48

約数和(自身を含む): 1038735360

約数和(自身を除く): 398930823

約数列:

[1, 3, 9, 17, 19, 51, 57, 127, 153, 171, 323, 381, 969, 1143, 1733, 2159, 2413, 2907, 5199, 6477, 7239, 15597, 19431, 21717, 29461, 32927, 41021, 88383, 98781, 123063, 220091, 265149, 296343, 369189, 559759, 660273, 1679277, 1980819, 3741547, 4181729, 5037831, 11224641, 12545187, 33673923, 37635561, 71089393, 213268179, 639804537]

約数ペア:

[(1, 639804537), (3, 213268179), (9, 71089393), (17, 37635561), (19, 33673923), (51, 12545187), (57, 11224641), (127, 5037831), (153, 4181729), (171, 3741547), (323, 1980819), (381, 1679277), (969, 660273), (1143, 559759), (1733, 369189), (2159, 296343), (2413, 265149), (2907, 220091), (5199, 123063), (6477, 98781), (7239, 88383), (15597, 41021), (19431, 32927), (21717, 29461)]