21519355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{30097}}^1$

素因数の和:30126

約数の個数: 16

約数和(自身を含む): 30338784

約数和(自身を除く): 8819429

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 30097, 150485, 331067, 391261, 1655335, 1956305, 4303871, 21519355]

約数ペア:

[(1, 21519355), (5, 4303871), (11, 1956305), (13, 1655335), (55, 391261), (65, 331067), (143, 150485), (715, 30097)]