397390420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{20719}}^1$

素因数の和:20872

約数の個数: 48

約数和(自身を含む): 960744960

約数和(自身を除く): 563354540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1370, 1918, 2740, 3836, 4795, 9590, 19180, 20719, 41438, 82876, 103595, 145033, 207190, 290066, 414380, 580132, 725165, 1450330, 2838503, 2900660, 5677006, 11354012, 14192515, 19869521, 28385030, 39739042, 56770060, 79478084, 99347605, 198695210, 397390420]

約数ペア:

[(1, 397390420), (2, 198695210), (4, 99347605), (5, 79478084), (7, 56770060), (10, 39739042), (14, 28385030), (20, 19869521), (28, 14192515), (35, 11354012), (70, 5677006), (137, 2900660), (140, 2838503), (274, 1450330), (548, 725165), (685, 580132), (959, 414380), (1370, 290066), (1918, 207190), (2740, 145033), (3836, 103595), (4795, 82876), (9590, 41438), (19180, 20719)]