21039040

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:210

約数の個数: 112

約数和(自身を含む): 56327040

約数和(自身を除く): 35288000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 64, 80, 86, 88, 110, 139, 160, 172, 176, 215, 220, 278, 320, 344, 352, 430, 440, 473, 556, 688, 695, 704, 860, 880, 946, 1112, 1376, 1390, 1529, 1720, 1760, 1892, 2224, 2365, 2752, 2780, 3058, 3440, 3520, 3784, 4448, 4730, 5560, 5977, 6116, 6880, 7568, 7645, 8896, 9460, 11120, 11954, 12232, 13760, 15136, 15290, 18920, 22240, 23908, 24464, 29885, 30272, 30580, 37840, 44480, 47816, 48928, 59770, 61160, 65747, 75680, 95632, 97856, 119540, 122320, 131494, 151360, 191264, 239080, 244640, 262988, 328735, 382528, 478160, 489280, 525976, 657470, 956320, 1051952, 1314940, 1912640, 2103904, 2629880, 4207808, 5259760, 10519520, 21039040]

約数ペア:

[(1, 21039040), (2, 10519520), (4, 5259760), (5, 4207808), (8, 2629880), (10, 2103904), (11, 1912640), (16, 1314940), (20, 1051952), (22, 956320), (32, 657470), (40, 525976), (43, 489280), (44, 478160), (55, 382528), (64, 328735), (80, 262988), (86, 244640), (88, 239080), (110, 191264), (139, 151360), (160, 131494), (172, 122320), (176, 119540), (215, 97856), (220, 95632), (278, 75680), (320, 65747), (344, 61160), (352, 59770), (430, 48928), (440, 47816), (473, 44480), (556, 37840), (688, 30580), (695, 30272), (704, 29885), (860, 24464), (880, 23908), (946, 22240), (1112, 18920), (1376, 15290), (1390, 15136), (1529, 13760), (1720, 12232), (1760, 11954), (1892, 11120), (2224, 9460), (2365, 8896), (2752, 7645), (2780, 7568), (3058, 6880), (3440, 6116), (3520, 5977), (3784, 5560), (4448, 4730)]