21294180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{421}}^1$

素因数の和:717

約数の個数: 72

約数和(自身を含む): 64976184

約数和(自身を除く): 43682004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 281, 421, 562, 842, 843, 1124, 1263, 1405, 1684, 1686, 2105, 2526, 2529, 2810, 3372, 3789, 4210, 4215, 5052, 5058, 5620, 6315, 7578, 8420, 8430, 10116, 12630, 12645, 15156, 16860, 18945, 25260, 25290, 37890, 50580, 75780, 118301, 236602, 354903, 473204, 591505, 709806, 1064709, 1183010, 1419612, 1774515, 2129418, 2366020, 3549030, 4258836, 5323545, 7098060, 10647090, 21294180]

約数ペア:

[(1, 21294180), (2, 10647090), (3, 7098060), (4, 5323545), (5, 4258836), (6, 3549030), (9, 2366020), (10, 2129418), (12, 1774515), (15, 1419612), (18, 1183010), (20, 1064709), (30, 709806), (36, 591505), (45, 473204), (60, 354903), (90, 236602), (180, 118301), (281, 75780), (421, 50580), (562, 37890), (842, 25290), (843, 25260), (1124, 18945), (1263, 16860), (1405, 15156), (1684, 12645), (1686, 12630), (2105, 10116), (2526, 8430), (2529, 8420), (2810, 7578), (3372, 6315), (3789, 5620), (4210, 5058), (4215, 5052)]