2021158120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{27809}}^1$

素因数の和:27922

約数の個数: 64

約数和(自身を含む): 4805568000

約数和(自身を除く): 2784409880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 316, 395, 460, 632, 790, 920, 1580, 1817, 3160, 3634, 7268, 9085, 14536, 18170, 27809, 36340, 55618, 72680, 111236, 139045, 222472, 278090, 556180, 639607, 1112360, 1279214, 2196911, 2558428, 3198035, 4393822, 5116856, 6396070, 8787644, 10984555, 12792140, 17575288, 21969110, 25584280, 43938220, 50528953, 87876440, 101057906, 202115812, 252644765, 404231624, 505289530, 1010579060, 2021158120]

約数ペア:

[(1, 2021158120), (2, 1010579060), (4, 505289530), (5, 404231624), (8, 252644765), (10, 202115812), (20, 101057906), (23, 87876440), (40, 50528953), (46, 43938220), (79, 25584280), (92, 21969110), (115, 17575288), (158, 12792140), (184, 10984555), (230, 8787644), (316, 6396070), (395, 5116856), (460, 4393822), (632, 3198035), (790, 2558428), (920, 2196911), (1580, 1279214), (1817, 1112360), (3160, 639607), (3634, 556180), (7268, 278090), (9085, 222472), (14536, 139045), (18170, 111236), (27809, 72680), (36340, 55618)]