20179464620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{342373}}^1$

素因数の和:342810

約数の個数: 48

約数和(自身を含む): 48545894208

約数和(自身を除く): 28366429588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 842, 1684, 2105, 2947, 4210, 5894, 8420, 11788, 14735, 29470, 58940, 342373, 684746, 1369492, 1711865, 2396611, 3423730, 4793222, 6847460, 9586444, 11983055, 23966110, 47932220, 144139033, 288278066, 576556132, 720695165, 1008973231, 1441390330, 2017946462, 2882780660, 4035892924, 5044866155, 10089732310, 20179464620]

約数ペア:

[(1, 20179464620), (2, 10089732310), (4, 5044866155), (5, 4035892924), (7, 2882780660), (10, 2017946462), (14, 1441390330), (20, 1008973231), (28, 720695165), (35, 576556132), (70, 288278066), (140, 144139033), (421, 47932220), (842, 23966110), (1684, 11983055), (2105, 9586444), (2947, 6847460), (4210, 4793222), (5894, 3423730), (8420, 2396611), (11788, 1711865), (14735, 1369492), (29470, 684746), (58940, 342373)]