20571005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1559}}^1$

素因数の和:1613

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 10878595

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1559, 1885, 2639, 7795, 10913, 13195, 20267, 45211, 54565, 101335, 141869, 226055, 316477, 587743, 709345, 1582385, 2938715, 4114201, 20571005]

約数ペア:

[(1, 20571005), (5, 4114201), (7, 2938715), (13, 1582385), (29, 709345), (35, 587743), (65, 316477), (91, 226055), (145, 141869), (203, 101335), (377, 54565), (455, 45211), (1015, 20267), (1559, 13195), (1885, 10913), (2639, 7795)]