2005672720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{808739}}^1$

素因数の和:808783

約数の個数: 40

約数和(自身を含む): 4813620480

約数和(自身を除く): 2807947760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 808739, 1617478, 3234956, 4043695, 6469912, 8087390, 12939824, 16174780, 25070909, 32349560, 50141818, 64699120, 100283636, 125354545, 200567272, 250709090, 401134544, 501418180, 1002836360, 2005672720]

約数ペア:

[(1, 2005672720), (2, 1002836360), (4, 501418180), (5, 401134544), (8, 250709090), (10, 200567272), (16, 125354545), (20, 100283636), (31, 64699120), (40, 50141818), (62, 32349560), (80, 25070909), (124, 16174780), (155, 12939824), (248, 8087390), (310, 6469912), (496, 4043695), (620, 3234956), (1240, 1617478), (2480, 808739)]