397375420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{7919}}^1$

素因数の和:8134

約数の個数: 48

約数和(自身を含む): 903450240

約数和(自身を除く): 506074820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 772, 965, 1930, 2509, 3860, 5018, 7919, 10036, 12545, 15838, 25090, 31676, 39595, 50180, 79190, 102947, 158380, 205894, 411788, 514735, 1029470, 1528367, 2058940, 3056734, 6113468, 7641835, 15283670, 19868771, 30567340, 39737542, 79475084, 99343855, 198687710, 397375420]

約数ペア:

[(1, 397375420), (2, 198687710), (4, 99343855), (5, 79475084), (10, 39737542), (13, 30567340), (20, 19868771), (26, 15283670), (52, 7641835), (65, 6113468), (130, 3056734), (193, 2058940), (260, 1528367), (386, 1029470), (772, 514735), (965, 411788), (1930, 205894), (2509, 158380), (3860, 102947), (5018, 79190), (7919, 50180), (10036, 39595), (12545, 31676), (15838, 25090)]