20104109720

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1039}}^1\times {\mathrm{2131}}^1$

素因数の和:3408

約数の個数: 64

約数和(自身を含む): 45498585600

約数和(自身を除く): 25394475880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1039, 1135, 1816, 2078, 2131, 2270, 4156, 4262, 4540, 5195, 8312, 8524, 9080, 10390, 10655, 17048, 20780, 21310, 41560, 42620, 85240, 235853, 471706, 483737, 943412, 967474, 1179265, 1886824, 1934948, 2214109, 2358530, 2418685, 3869896, 4428218, 4717060, 4837370, 8856436, 9434120, 9674740, 11070545, 17712872, 19349480, 22141090, 44282180, 88564360, 502602743, 1005205486, 2010410972, 2513013715, 4020821944, 5026027430, 10052054860, 20104109720]

約数ペア:

[(1, 20104109720), (2, 10052054860), (4, 5026027430), (5, 4020821944), (8, 2513013715), (10, 2010410972), (20, 1005205486), (40, 502602743), (227, 88564360), (454, 44282180), (908, 22141090), (1039, 19349480), (1135, 17712872), (1816, 11070545), (2078, 9674740), (2131, 9434120), (2270, 8856436), (4156, 4837370), (4262, 4717060), (4540, 4428218), (5195, 3869896), (8312, 2418685), (8524, 2358530), (9080, 2214109), (10390, 1934948), (10655, 1886824), (17048, 1179265), (20780, 967474), (21310, 943412), (41560, 483737), (42620, 471706), (85240, 235853)]