2021008900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{641}}^1\times {\mathrm{769}}^1$

素因数の和:1465

約数の個数: 72

約数和(自身を含む): 4505414760

約数和(自身を除く): 2484405860

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 641, 769, 820, 1025, 1282, 1538, 2050, 2564, 3076, 3205, 3845, 4100, 6410, 7690, 12820, 15380, 16025, 19225, 26281, 31529, 32050, 38450, 52562, 63058, 64100, 76900, 105124, 126116, 131405, 157645, 262810, 315290, 492929, 525620, 630580, 657025, 788225, 985858, 1314050, 1576450, 1971716, 2464645, 2628100, 3152900, 4929290, 9858580, 12323225, 20210089, 24646450, 40420178, 49292900, 80840356, 101050445, 202100890, 404201780, 505252225, 1010504450, 2021008900]

約数ペア:

[(1, 2021008900), (2, 1010504450), (4, 505252225), (5, 404201780), (10, 202100890), (20, 101050445), (25, 80840356), (41, 49292900), (50, 40420178), (82, 24646450), (100, 20210089), (164, 12323225), (205, 9858580), (410, 4929290), (641, 3152900), (769, 2628100), (820, 2464645), (1025, 1971716), (1282, 1576450), (1538, 1314050), (2050, 985858), (2564, 788225), (3076, 657025), (3205, 630580), (3845, 525620), (4100, 492929), (6410, 315290), (7690, 262810), (12820, 157645), (15380, 131405), (16025, 126116), (19225, 105124), (26281, 76900), (31529, 64100), (32050, 63058), (38450, 52562)]