208380340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{212633}}^1$

素因数の和:212656

約数の個数: 36

約数和(自身を含む): 509045796

約数和(自身を除く): 300665456

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 212633, 425266, 850532, 1063165, 1488431, 2126330, 2976862, 4252660, 5953724, 7442155, 10419017, 14884310, 20838034, 29768620, 41676068, 52095085, 104190170, 208380340]

約数ペア:

[(1, 208380340), (2, 104190170), (4, 52095085), (5, 41676068), (7, 29768620), (10, 20838034), (14, 14884310), (20, 10419017), (28, 7442155), (35, 5953724), (49, 4252660), (70, 2976862), (98, 2126330), (140, 1488431), (196, 1063165), (245, 850532), (490, 425266), (980, 212633)]