20281250

素因数分解:

$2^1\times 5^6\times {\mathrm{11}}^1\times {\mathrm{59}}^1$

素因数の和:102

約数の個数: 56

約数和(自身を含む): 42186960

約数和(自身を除く): 21905710

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 59, 110, 118, 125, 250, 275, 295, 550, 590, 625, 649, 1250, 1298, 1375, 1475, 2750, 2950, 3125, 3245, 6250, 6490, 6875, 7375, 13750, 14750, 15625, 16225, 31250, 32450, 34375, 36875, 68750, 73750, 81125, 162250, 171875, 184375, 343750, 368750, 405625, 811250, 921875, 1843750, 2028125, 4056250, 10140625, 20281250]

約数ペア:

[(1, 20281250), (2, 10140625), (5, 4056250), (10, 2028125), (11, 1843750), (22, 921875), (25, 811250), (50, 405625), (55, 368750), (59, 343750), (110, 184375), (118, 171875), (125, 162250), (250, 81125), (275, 73750), (295, 68750), (550, 36875), (590, 34375), (625, 32450), (649, 31250), (1250, 16225), (1298, 15625), (1375, 14750), (1475, 13750), (2750, 7375), (2950, 6875), (3125, 6490), (3245, 6250)]