21048015

素因数分解:

$3^1\times 5^1\times {\mathrm{1153}}^1\times {\mathrm{1217}}^1$

素因数の和:2378

約数の個数: 16

約数和(自身を含む): 33733728

約数和(自身を除く): 12685713

約数列:

[1, 3, 5, 15, 1153, 1217, 3459, 3651, 5765, 6085, 17295, 18255, 1403201, 4209603, 7016005, 21048015]

約数ペア:

[(1, 21048015), (3, 7016005), (5, 4209603), (15, 1403201), (1153, 18255), (1217, 17295), (3459, 6085), (3651, 5765)]