21031175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2467}}^1$

素因数の和:2519

約数の個数: 24

約数和(自身を含む): 29379072

約数和(自身を除く): 8347897

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2467, 8525, 12335, 27137, 61675, 76477, 135685, 382385, 678425, 841247, 1911925, 4206235, 21031175]

約数ペア:

[(1, 21031175), (5, 4206235), (11, 1911925), (25, 841247), (31, 678425), (55, 382385), (155, 135685), (275, 76477), (341, 61675), (775, 27137), (1705, 12335), (2467, 8525)]