21354850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{947}}^1$

素因数の和:1011

約数の個数: 48

約数和(自身を含む): 44434656

約数和(自身を除く): 23079806

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 902, 947, 1025, 1894, 2050, 2255, 4510, 4735, 9470, 10417, 11275, 20834, 22550, 23675, 38827, 47350, 52085, 77654, 104170, 194135, 260425, 388270, 427097, 520850, 854194, 970675, 1941350, 2135485, 4270970, 10677425, 21354850]

約数ペア:

[(1, 21354850), (2, 10677425), (5, 4270970), (10, 2135485), (11, 1941350), (22, 970675), (25, 854194), (41, 520850), (50, 427097), (55, 388270), (82, 260425), (110, 194135), (205, 104170), (275, 77654), (410, 52085), (451, 47350), (550, 38827), (902, 23675), (947, 22550), (1025, 20834), (1894, 11275), (2050, 10417), (2255, 9470), (4510, 4735)]