19902685

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 26697888

約数和(自身を除く): 6795203

約数列:

[1, 5, 11, 55, 67, 121, 335, 491, 605, 737, 2455, 3685, 5401, 8107, 27005, 32897, 40535, 59411, 164485, 297055, 361867, 1809335, 3980537, 19902685]

約数ペア:

[(1, 19902685), (5, 3980537), (11, 1809335), (55, 361867), (67, 297055), (121, 164485), (335, 59411), (491, 40535), (605, 32897), (737, 27005), (2455, 8107), (3685, 5401)]