205106120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1381}}^1$

素因数の和:1518

約数の個数: 64

約数和(自身を含む): 477619200

約数和(自身を除く): 272513080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 79, 94, 158, 188, 235, 316, 376, 395, 470, 632, 790, 940, 1381, 1580, 1880, 2762, 3160, 3713, 5524, 6905, 7426, 11048, 13810, 14852, 18565, 27620, 29704, 37130, 55240, 64907, 74260, 109099, 129814, 148520, 218198, 259628, 324535, 436396, 519256, 545495, 649070, 872792, 1090990, 1298140, 2181980, 2596280, 4363960, 5127653, 10255306, 20510612, 25638265, 41021224, 51276530, 102553060, 205106120]

約数ペア:

[(1, 205106120), (2, 102553060), (4, 51276530), (5, 41021224), (8, 25638265), (10, 20510612), (20, 10255306), (40, 5127653), (47, 4363960), (79, 2596280), (94, 2181980), (158, 1298140), (188, 1090990), (235, 872792), (316, 649070), (376, 545495), (395, 519256), (470, 436396), (632, 324535), (790, 259628), (940, 218198), (1381, 148520), (1580, 129814), (1880, 109099), (2762, 74260), (3160, 64907), (3713, 55240), (5524, 37130), (6905, 29704), (7426, 27620), (11048, 18565), (13810, 14852)]