21049980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50119}}^1$

素因数の和:50138

約数の個数: 48

約数和(自身を含む): 67361280

約数和(自身を除く): 46311300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50119, 100238, 150357, 200476, 250595, 300714, 350833, 501190, 601428, 701666, 751785, 1002380, 1052499, 1403332, 1503570, 1754165, 2104998, 3007140, 3508330, 4209996, 5262495, 7016660, 10524990, 21049980]

約数ペア:

[(1, 21049980), (2, 10524990), (3, 7016660), (4, 5262495), (5, 4209996), (6, 3508330), (7, 3007140), (10, 2104998), (12, 1754165), (14, 1503570), (15, 1403332), (20, 1052499), (21, 1002380), (28, 751785), (30, 701666), (35, 601428), (42, 501190), (60, 350833), (70, 300714), (84, 250595), (105, 200476), (140, 150357), (210, 100238), (420, 50119)]