21095800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:293

約数の個数: 96

約数和(自身を含む): 54996480

約数和(自身を除く): 33900680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 43, 44, 50, 55, 86, 88, 100, 110, 172, 200, 215, 220, 223, 275, 344, 430, 440, 446, 473, 550, 860, 892, 946, 1075, 1100, 1115, 1720, 1784, 1892, 2150, 2200, 2230, 2365, 2453, 3784, 4300, 4460, 4730, 4906, 5575, 8600, 8920, 9460, 9589, 9812, 11150, 11825, 12265, 18920, 19178, 19624, 22300, 23650, 24530, 38356, 44600, 47300, 47945, 49060, 61325, 76712, 94600, 95890, 98120, 105479, 122650, 191780, 210958, 239725, 245300, 383560, 421916, 479450, 490600, 527395, 843832, 958900, 1054790, 1917800, 2109580, 2636975, 4219160, 5273950, 10547900, 21095800]

約数ペア:

[(1, 21095800), (2, 10547900), (4, 5273950), (5, 4219160), (8, 2636975), (10, 2109580), (11, 1917800), (20, 1054790), (22, 958900), (25, 843832), (40, 527395), (43, 490600), (44, 479450), (50, 421916), (55, 383560), (86, 245300), (88, 239725), (100, 210958), (110, 191780), (172, 122650), (200, 105479), (215, 98120), (220, 95890), (223, 94600), (275, 76712), (344, 61325), (430, 49060), (440, 47945), (446, 47300), (473, 44600), (550, 38356), (860, 24530), (892, 23650), (946, 22300), (1075, 19624), (1100, 19178), (1115, 18920), (1720, 12265), (1784, 11825), (1892, 11150), (2150, 9812), (2200, 9589), (2230, 9460), (2365, 8920), (2453, 8600), (3784, 5575), (4300, 4906), (4460, 4730)]