19722857

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3823}}^1$

素因数の和:3908

約数の個数: 16

約数和(自身を含む): 24963072

約数和(自身を除く): 5240215

約数列:

[1, 7, 11, 67, 77, 469, 737, 3823, 5159, 26761, 42053, 256141, 294371, 1792987, 2817551, 19722857]

約数ペア:

[(1, 19722857), (7, 2817551), (11, 1792987), (67, 294371), (77, 256141), (469, 42053), (737, 26761), (3823, 5159)]