21927420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2833}}^1$

素因数の和:2891

約数の個数: 72

約数和(自身を含む): 68084016

約数和(自身を除く): 46156596

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, 2833, 3870, 5666, 7740, 8499, 11332, 14165, 16998, 25497, 28330, 33996, 42495, 50994, 56660, 84990, 101988, 121819, 127485, 169980, 243638, 254970, 365457, 487276, 509940, 609095, 730914, 1096371, 1218190, 1461828, 1827285, 2192742, 2436380, 3654570, 4385484, 5481855, 7309140, 10963710, 21927420]

約数ペア:

[(1, 21927420), (2, 10963710), (3, 7309140), (4, 5481855), (5, 4385484), (6, 3654570), (9, 2436380), (10, 2192742), (12, 1827285), (15, 1461828), (18, 1218190), (20, 1096371), (30, 730914), (36, 609095), (43, 509940), (45, 487276), (60, 365457), (86, 254970), (90, 243638), (129, 169980), (172, 127485), (180, 121819), (215, 101988), (258, 84990), (387, 56660), (430, 50994), (516, 42495), (645, 33996), (774, 28330), (860, 25497), (1290, 16998), (1548, 14165), (1935, 11332), (2580, 8499), (2833, 7740), (3870, 5666)]