21000736520

素因数分解:

$2^3\times 5^1\times {\mathrm{5441}}^1\times {\mathrm{96493}}^1$

素因数の和:101945

約数の個数: 32

約数和(自身を含む): 47260831320

約数和(自身を除く): 26260094800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5441, 10882, 21764, 27205, 43528, 54410, 96493, 108820, 192986, 217640, 385972, 482465, 771944, 964930, 1929860, 3859720, 525018413, 1050036826, 2100073652, 2625092065, 4200147304, 5250184130, 10500368260, 21000736520]

約数ペア:

[(1, 21000736520), (2, 10500368260), (4, 5250184130), (5, 4200147304), (8, 2625092065), (10, 2100073652), (20, 1050036826), (40, 525018413), (5441, 3859720), (10882, 1929860), (21764, 964930), (27205, 771944), (43528, 482465), (54410, 385972), (96493, 217640), (108820, 192986)]