21108540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2531}}^1$

素因数の和:2682

約数の個数: 48

約数和(自身を含む): 59552640

約数和(自身を除く): 38444100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2531, 2780, 4170, 5062, 7593, 8340, 10124, 12655, 15186, 25310, 30372, 37965, 50620, 75930, 151860, 351809, 703618, 1055427, 1407236, 1759045, 2110854, 3518090, 4221708, 5277135, 7036180, 10554270, 21108540]

約数ペア:

[(1, 21108540), (2, 10554270), (3, 7036180), (4, 5277135), (5, 4221708), (6, 3518090), (10, 2110854), (12, 1759045), (15, 1407236), (20, 1055427), (30, 703618), (60, 351809), (139, 151860), (278, 75930), (417, 50620), (556, 37965), (695, 30372), (834, 25310), (1390, 15186), (1668, 12655), (2085, 10124), (2531, 8340), (2780, 7593), (4170, 5062)]