205017320

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{337}}^1$

素因数の和:642

約数の個数: 64

約数和(自身を含む): 471631680

約数和(自身を除く): 266614360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 227, 268, 335, 337, 454, 536, 670, 674, 908, 1135, 1340, 1348, 1685, 1816, 2270, 2680, 2696, 3370, 4540, 6740, 9080, 13480, 15209, 22579, 30418, 45158, 60836, 76045, 76499, 90316, 112895, 121672, 152090, 152998, 180632, 225790, 304180, 305996, 382495, 451580, 608360, 611992, 764990, 903160, 1529980, 3059960, 5125433, 10250866, 20501732, 25627165, 41003464, 51254330, 102508660, 205017320]

約数ペア:

[(1, 205017320), (2, 102508660), (4, 51254330), (5, 41003464), (8, 25627165), (10, 20501732), (20, 10250866), (40, 5125433), (67, 3059960), (134, 1529980), (227, 903160), (268, 764990), (335, 611992), (337, 608360), (454, 451580), (536, 382495), (670, 305996), (674, 304180), (908, 225790), (1135, 180632), (1340, 152998), (1348, 152090), (1685, 121672), (1816, 112895), (2270, 90316), (2680, 76499), (2696, 76045), (3370, 60836), (4540, 45158), (6740, 30418), (9080, 22579), (13480, 15209)]