20802650720

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{828131}}^1$

素因数の和:828303

約数の個数: 48

約数和(自身を含む): 49459355568

約数和(自身を除く): 28656704848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 1256, 1570, 2512, 3140, 5024, 6280, 12560, 25120, 828131, 1656262, 3312524, 4140655, 6625048, 8281310, 13250096, 16562620, 26500192, 33125240, 66250480, 130016567, 132500960, 260033134, 520066268, 650082835, 1040132536, 1300165670, 2080265072, 2600331340, 4160530144, 5200662680, 10401325360, 20802650720]

約数ペア:

[(1, 20802650720), (2, 10401325360), (4, 5200662680), (5, 4160530144), (8, 2600331340), (10, 2080265072), (16, 1300165670), (20, 1040132536), (32, 650082835), (40, 520066268), (80, 260033134), (157, 132500960), (160, 130016567), (314, 66250480), (628, 33125240), (785, 26500192), (1256, 16562620), (1570, 13250096), (2512, 8281310), (3140, 6625048), (5024, 4140655), (6280, 3312524), (12560, 1656262), (25120, 828131)]