205622620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{209819}}^1$

素因数の和:209842

約数の個数: 36

約数和(自身を含む): 502309080

約数和(自身を除く): 296686460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 209819, 419638, 839276, 1049095, 1468733, 2098190, 2937466, 4196380, 5874932, 7343665, 10281131, 14687330, 20562262, 29374660, 41124524, 51405655, 102811310, 205622620]

約数ペア:

[(1, 205622620), (2, 102811310), (4, 51405655), (5, 41124524), (7, 29374660), (10, 20562262), (14, 14687330), (20, 10281131), (28, 7343665), (35, 5874932), (49, 4196380), (70, 2937466), (98, 2098190), (140, 1468733), (196, 1049095), (245, 839276), (490, 419638), (980, 209819)]