21000688779

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14084969}}^1$

素因数の和:14085050

約数の個数: 16

約数和(自身を含む): 32451770880

約数和(自身を除く): 11451082101

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14084969, 42254907, 98594783, 295784349, 1000032799, 3000098397, 7000229593, 21000688779]

約数ペア:

[(1, 21000688779), (3, 7000229593), (7, 3000098397), (21, 1000032799), (71, 295784349), (213, 98594783), (497, 42254907), (1491, 14084969)]