20712580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{751}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 50029056

約数和(自身を除く): 29316476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 751, 788, 985, 1379, 1502, 1970, 2758, 3004, 3755, 3940, 5257, 5516, 6895, 7510, 10514, 13790, 15020, 21028, 26285, 27580, 52570, 105140, 147947, 295894, 591788, 739735, 1035629, 1479470, 2071258, 2958940, 4142516, 5178145, 10356290, 20712580]

約数ペア:

[(1, 20712580), (2, 10356290), (4, 5178145), (5, 4142516), (7, 2958940), (10, 2071258), (14, 1479470), (20, 1035629), (28, 739735), (35, 591788), (70, 295894), (140, 147947), (197, 105140), (394, 52570), (751, 27580), (788, 26285), (985, 21028), (1379, 15020), (1502, 13790), (1970, 10514), (2758, 7510), (3004, 6895), (3755, 5516), (3940, 5257)]