21087605

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54773}}^1$

素因数の和:54796

約数の個数: 16

約数和(自身を含む): 31549824

約数和(自身を除く): 10462219

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54773, 273865, 383411, 602503, 1917055, 3012515, 4217521, 21087605]

約数ペア:

[(1, 21087605), (5, 4217521), (7, 3012515), (11, 1917055), (35, 602503), (55, 383411), (77, 273865), (385, 54773)]