21000643251

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24390991}}^1$

素因数の和:24391042

約数の個数: 16

約数和(自身を含む): 32781493248

約数和(自身を除く): 11780849997

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24390991, 73172973, 170736937, 512210811, 1000030631, 3000091893, 7000214417, 21000643251]

約数ペア:

[(1, 21000643251), (3, 7000214417), (7, 3000091893), (21, 1000030631), (41, 512210811), (123, 170736937), (287, 73172973), (861, 24390991)]