21099705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127877}}^1$

素因数の和:127896

約数の個数: 16

約数和(自身を含む): 36828864

約数和(自身を除く): 15729159

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127877, 383631, 639385, 1406647, 1918155, 4219941, 7033235, 21099705]

約数ペア:

[(1, 21099705), (3, 7033235), (5, 4219941), (11, 1918155), (15, 1406647), (33, 639385), (55, 383631), (165, 127877)]