21679740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2801}}^1$

素因数の和:2859

約数の個数: 72

約数和(自身を含む): 67315248

約数和(自身を除く): 45635508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2801, 3870, 5602, 7740, 8403, 11204, 14005, 16806, 25209, 28010, 33612, 42015, 50418, 56020, 84030, 100836, 120443, 126045, 168060, 240886, 252090, 361329, 481772, 504180, 602215, 722658, 1083987, 1204430, 1445316, 1806645, 2167974, 2408860, 3613290, 4335948, 5419935, 7226580, 10839870, 21679740]

約数ペア:

[(1, 21679740), (2, 10839870), (3, 7226580), (4, 5419935), (5, 4335948), (6, 3613290), (9, 2408860), (10, 2167974), (12, 1806645), (15, 1445316), (18, 1204430), (20, 1083987), (30, 722658), (36, 602215), (43, 504180), (45, 481772), (60, 361329), (86, 252090), (90, 240886), (129, 168060), (172, 126045), (180, 120443), (215, 100836), (258, 84030), (387, 56020), (430, 50418), (516, 42015), (645, 33612), (774, 28010), (860, 25209), (1290, 16806), (1548, 14005), (1935, 11204), (2580, 8403), (2801, 7740), (3870, 5602)]