21189850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{653}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 43791840

約数和(自身を除く): 22601990

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 59, 110, 118, 275, 295, 550, 590, 649, 653, 1298, 1306, 1475, 2950, 3245, 3265, 6490, 6530, 7183, 14366, 16225, 16325, 32450, 32650, 35915, 38527, 71830, 77054, 179575, 192635, 359150, 385270, 423797, 847594, 963175, 1926350, 2118985, 4237970, 10594925, 21189850]

約数ペア:

[(1, 21189850), (2, 10594925), (5, 4237970), (10, 2118985), (11, 1926350), (22, 963175), (25, 847594), (50, 423797), (55, 385270), (59, 359150), (110, 192635), (118, 179575), (275, 77054), (295, 71830), (550, 38527), (590, 35915), (649, 32650), (653, 32450), (1298, 16325), (1306, 16225), (1475, 14366), (2950, 7183), (3245, 6530), (3265, 6490)]