1640883339

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{20117}}^1$

素因数の和:20201

約数の個数: 40

約数和(自身を含む): 2629020240

約数和(自身を除く): 988136901

約数列:

[1, 3, 9, 19, 27, 53, 57, 81, 159, 171, 477, 513, 1007, 1431, 1539, 3021, 4293, 9063, 20117, 27189, 60351, 81567, 181053, 382223, 543159, 1066201, 1146669, 1629477, 3198603, 3440007, 9595809, 10320021, 20257819, 28787427, 30960063, 60773457, 86362281, 182320371, 546961113, 1640883339]

約数ペア:

[(1, 1640883339), (3, 546961113), (9, 182320371), (19, 86362281), (27, 60773457), (53, 30960063), (57, 28787427), (81, 20257819), (159, 10320021), (171, 9595809), (477, 3440007), (513, 3198603), (1007, 1629477), (1431, 1146669), (1539, 1066201), (3021, 543159), (4293, 382223), (9063, 181053), (20117, 81567), (27189, 60351)]