19212920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^2\times {\mathrm{107}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 44294040

約数和(自身を除く): 25081120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 107, 134, 214, 268, 335, 428, 535, 536, 670, 856, 1070, 1340, 2140, 2680, 4280, 4489, 7169, 8978, 14338, 17956, 22445, 28676, 35845, 35912, 44890, 57352, 71690, 89780, 143380, 179560, 286760, 480323, 960646, 1921292, 2401615, 3842584, 4803230, 9606460, 19212920]

約数ペア:

[(1, 19212920), (2, 9606460), (4, 4803230), (5, 3842584), (8, 2401615), (10, 1921292), (20, 960646), (40, 480323), (67, 286760), (107, 179560), (134, 143380), (214, 89780), (268, 71690), (335, 57352), (428, 44890), (535, 35912), (536, 35845), (670, 28676), (856, 22445), (1070, 17956), (1340, 14338), (2140, 8978), (2680, 7169), (4280, 4489)]