21782145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18859}}^1$

素因数の和:18885

約数の個数: 32

約数和(自身を含む): 43453440

約数和(自身を除く): 21671295

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18859, 56577, 94295, 132013, 207449, 282885, 396039, 622347, 660065, 1037245, 1452143, 1980195, 3111735, 4356429, 7260715, 21782145]

約数ペア:

[(1, 21782145), (3, 7260715), (5, 4356429), (7, 3111735), (11, 1980195), (15, 1452143), (21, 1037245), (33, 660065), (35, 622347), (55, 396039), (77, 282885), (105, 207449), (165, 132013), (231, 94295), (385, 56577), (1155, 18859)]