19991450

素因数分解:

$2^1\times 5^2\times {\mathrm{47}}^2\times {\mathrm{181}}^1$

素因数の和:287

約数の個数: 36

約数和(自身を含む): 38201982

約数和(自身を除く): 18210532

約数列:

[1, 2, 5, 10, 25, 47, 50, 94, 181, 235, 362, 470, 905, 1175, 1810, 2209, 2350, 4418, 4525, 8507, 9050, 11045, 17014, 22090, 42535, 55225, 85070, 110450, 212675, 399829, 425350, 799658, 1999145, 3998290, 9995725, 19991450]

約数ペア:

[(1, 19991450), (2, 9995725), (5, 3998290), (10, 1999145), (25, 799658), (47, 425350), (50, 399829), (94, 212675), (181, 110450), (235, 85070), (362, 55225), (470, 42535), (905, 22090), (1175, 17014), (1810, 11045), (2209, 9050), (2350, 8507), (4418, 4525)]