201212620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205319}}^1$

素因数の和:205342

約数の個数: 36

約数和(自身を含む): 491536080

約数和(自身を除く): 290323460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205319, 410638, 821276, 1026595, 1437233, 2053190, 2874466, 4106380, 5748932, 7186165, 10060631, 14372330, 20121262, 28744660, 40242524, 50303155, 100606310, 201212620]

約数ペア:

[(1, 201212620), (2, 100606310), (4, 50303155), (5, 40242524), (7, 28744660), (10, 20121262), (14, 14372330), (20, 10060631), (28, 7186165), (35, 5748932), (49, 4106380), (70, 2874466), (98, 2053190), (140, 1437233), (196, 1026595), (245, 821276), (490, 410638), (980, 205319)]