20452850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:971

約数の個数: 48

約数和(自身を含む): 42559776

約数和(自身を除く): 22106926

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 902, 907, 1025, 1814, 2050, 2255, 4510, 4535, 9070, 9977, 11275, 19954, 22550, 22675, 37187, 45350, 49885, 74374, 99770, 185935, 249425, 371870, 409057, 498850, 818114, 929675, 1859350, 2045285, 4090570, 10226425, 20452850]

約数ペア:

[(1, 20452850), (2, 10226425), (5, 4090570), (10, 2045285), (11, 1859350), (22, 929675), (25, 818114), (41, 498850), (50, 409057), (55, 371870), (82, 249425), (110, 185935), (205, 99770), (275, 74374), (410, 49885), (451, 45350), (550, 37187), (902, 22675), (907, 22550), (1025, 19954), (1814, 11275), (2050, 9977), (2255, 9070), (4510, 4535)]