20556996850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{400331}}^1$

素因数の和:400435

約数の個数: 48

約数和(自身を含む): 41698581120

約数和(自身を除く): 21141584270

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 79, 130, 158, 325, 395, 650, 790, 1027, 1975, 2054, 3950, 5135, 10270, 25675, 51350, 400331, 800662, 2001655, 4003310, 5204303, 10008275, 10408606, 20016550, 26021515, 31626149, 52043030, 63252298, 130107575, 158130745, 260215150, 316261490, 411139937, 790653725, 822279874, 1581307450, 2055699685, 4111399370, 10278498425, 20556996850]

約数ペア:

[(1, 20556996850), (2, 10278498425), (5, 4111399370), (10, 2055699685), (13, 1581307450), (25, 822279874), (26, 790653725), (50, 411139937), (65, 316261490), (79, 260215150), (130, 158130745), (158, 130107575), (325, 63252298), (395, 52043030), (650, 31626149), (790, 26021515), (1027, 20016550), (1975, 10408606), (2054, 10008275), (3950, 5204303), (5135, 4003310), (10270, 2001655), (25675, 800662), (51350, 400331)]