21741660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^2$

素因数の和:164

約数の個数: 108

約数和(自身を含む): 68780712

約数和(自身を除く): 47039052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 53, 60, 86, 90, 106, 129, 159, 172, 180, 212, 215, 258, 265, 318, 387, 430, 477, 516, 530, 636, 645, 774, 795, 860, 954, 1060, 1290, 1548, 1590, 1908, 1935, 2279, 2385, 2580, 2809, 3180, 3870, 4558, 4770, 5618, 6837, 7740, 8427, 9116, 9540, 11236, 11395, 13674, 14045, 16854, 20511, 22790, 25281, 27348, 28090, 33708, 34185, 41022, 42135, 45580, 50562, 56180, 68370, 82044, 84270, 101124, 102555, 120787, 126405, 136740, 168540, 205110, 241574, 252810, 362361, 410220, 483148, 505620, 603935, 724722, 1087083, 1207870, 1449444, 1811805, 2174166, 2415740, 3623610, 4348332, 5435415, 7247220, 10870830, 21741660]

約数ペア:

[(1, 21741660), (2, 10870830), (3, 7247220), (4, 5435415), (5, 4348332), (6, 3623610), (9, 2415740), (10, 2174166), (12, 1811805), (15, 1449444), (18, 1207870), (20, 1087083), (30, 724722), (36, 603935), (43, 505620), (45, 483148), (53, 410220), (60, 362361), (86, 252810), (90, 241574), (106, 205110), (129, 168540), (159, 136740), (172, 126405), (180, 120787), (212, 102555), (215, 101124), (258, 84270), (265, 82044), (318, 68370), (387, 56180), (430, 50562), (477, 45580), (516, 42135), (530, 41022), (636, 34185), (645, 33708), (774, 28090), (795, 27348), (860, 25281), (954, 22790), (1060, 20511), (1290, 16854), (1548, 14045), (1590, 13674), (1908, 11395), (1935, 11236), (2279, 9540), (2385, 9116), (2580, 8427), (2809, 7740), (3180, 6837), (3870, 5618), (4558, 4770)]