19199840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10909}}^1$

素因数の和:10935

約数の個数: 48

約数和(自身を含む): 49487760

約数和(自身を除く): 30287920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 10909, 21818, 43636, 54545, 87272, 109090, 119999, 174544, 218180, 239998, 349088, 436360, 479996, 599995, 872720, 959992, 1199990, 1745440, 1919984, 2399980, 3839968, 4799960, 9599920, 19199840]

約数ペア:

[(1, 19199840), (2, 9599920), (4, 4799960), (5, 3839968), (8, 2399980), (10, 1919984), (11, 1745440), (16, 1199990), (20, 959992), (22, 872720), (32, 599995), (40, 479996), (44, 436360), (55, 349088), (80, 239998), (88, 218180), (110, 174544), (160, 119999), (176, 109090), (220, 87272), (352, 54545), (440, 43636), (880, 21818), (1760, 10909)]