21095081

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:584

約数の個数: 16

約数和(自身を含む): 24760320

約数和(自身を除く): 3665239

約数列:

[1, 7, 61, 127, 389, 427, 889, 2723, 7747, 23729, 49403, 54229, 166103, 345821, 3013583, 21095081]

約数ペア:

[(1, 21095081), (7, 3013583), (61, 345821), (127, 166103), (389, 54229), (427, 49403), (889, 23729), (2723, 7747)]