21338535

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33083}}^1$

素因数の和:33134

約数の個数: 16

約数和(自身を含む): 34936704

約数和(自身を除く): 13598169

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33083, 99249, 165415, 496245, 1422569, 4267707, 7112845, 21338535]

約数ペア:

[(1, 21338535), (3, 7112845), (5, 4267707), (15, 1422569), (43, 496245), (129, 165415), (215, 99249), (645, 33083)]