21292971

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14281}}^1$

素因数の和:14362

約数の個数: 16

約数和(自身を含む): 32905728

約数和(自身を除く): 11612757

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14281, 42843, 99967, 299901, 1013951, 3041853, 7097657, 21292971]

約数ペア:

[(1, 21292971), (3, 7097657), (7, 3041853), (21, 1013951), (71, 299901), (213, 99967), (497, 42843), (1491, 14281)]