20758955

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9722965

約数列:

[1, 5, 7, 17, 35, 85, 119, 139, 251, 595, 695, 973, 1255, 1757, 2363, 4267, 4865, 8785, 11815, 16541, 21335, 29869, 34889, 82705, 149345, 174445, 244223, 593113, 1221115, 2965565, 4151791, 20758955]

約数ペア:

[(1, 20758955), (5, 4151791), (7, 2965565), (17, 1221115), (35, 593113), (85, 244223), (119, 174445), (139, 149345), (251, 82705), (595, 34889), (695, 29869), (973, 21335), (1255, 16541), (1757, 11815), (2363, 8785), (4267, 4865)]