21976955

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4391}}^1$

素因数の和:4427

約数の個数: 32

約数和(自身を含む): 35417088

約数和(自身を除く): 13440133

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4391, 5005, 21955, 30737, 48301, 57083, 153685, 241505, 285415, 338107, 399581, 627913, 1690535, 1997905, 3139565, 4395391, 21976955]

約数ペア:

[(1, 21976955), (5, 4395391), (7, 3139565), (11, 1997905), (13, 1690535), (35, 627913), (55, 399581), (65, 338107), (77, 285415), (91, 241505), (143, 153685), (385, 57083), (455, 48301), (715, 30737), (1001, 21955), (4391, 5005)]