21887690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{18089}}^1$

素因数の和:18118

約数の個数: 24

約数和(自身を含む): 43307460

約数和(自身を除く): 21419770

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 18089, 36178, 90445, 180890, 198979, 397958, 994895, 1989790, 2188769, 4377538, 10943845, 21887690]

約数ペア:

[(1, 21887690), (2, 10943845), (5, 4377538), (10, 2188769), (11, 1989790), (22, 994895), (55, 397958), (110, 198979), (121, 180890), (242, 90445), (605, 36178), (1210, 18089)]