19991256994

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{37181}}^1$

素因数の和:37386

約数の個数: 32

約数和(自身を含む): 31482743040

約数和(自身を除く): 11491486046

約数列:

[1, 2, 41, 79, 82, 83, 158, 166, 3239, 3403, 6478, 6557, 6806, 13114, 37181, 74362, 268837, 537674, 1524421, 2937299, 3048842, 3086023, 5874598, 6172046, 120429259, 126526943, 240858518, 243795817, 253053886, 487591634, 9995628497, 19991256994]

約数ペア:

[(1, 19991256994), (2, 9995628497), (41, 487591634), (79, 253053886), (82, 243795817), (83, 240858518), (158, 126526943), (166, 120429259), (3239, 6172046), (3403, 5874598), (6478, 3086023), (6557, 3048842), (6806, 2937299), (13114, 1524421), (37181, 537674), (74362, 268837)]