18270980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10039}}^1$

素因数の和:10068

約数の個数: 48

約数和(自身を含む): 47228160

約数和(自身を除く): 28957180

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10039, 20078, 40156, 50195, 70273, 100390, 130507, 140546, 200780, 261014, 281092, 351365, 522028, 652535, 702730, 913549, 1305070, 1405460, 1827098, 2610140, 3654196, 4567745, 9135490, 18270980]

約数ペア:

[(1, 18270980), (2, 9135490), (4, 4567745), (5, 3654196), (7, 2610140), (10, 1827098), (13, 1405460), (14, 1305070), (20, 913549), (26, 702730), (28, 652535), (35, 522028), (52, 351365), (65, 281092), (70, 261014), (91, 200780), (130, 140546), (140, 130507), (182, 100390), (260, 70273), (364, 50195), (455, 40156), (910, 20078), (1820, 10039)]