21717795

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{3061}}^1$

素因数の和:3123

約数の個数: 32

約数和(自身を含む): 38801664

約数和(自身を除く): 17083869

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 3061, 7095, 9183, 15305, 33671, 45915, 101013, 131623, 168355, 394869, 505065, 658115, 1447853, 1974345, 4343559, 7239265, 21717795]

約数ペア:

[(1, 21717795), (3, 7239265), (5, 4343559), (11, 1974345), (15, 1447853), (33, 658115), (43, 505065), (55, 394869), (129, 168355), (165, 131623), (215, 101013), (473, 45915), (645, 33671), (1419, 15305), (2365, 9183), (3061, 7095)]