21539784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{128213}}^1$

素因数の和:128229

約数の個数: 32

約数和(自身を含む): 61542720

約数和(自身を除く): 40002936

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 128213, 256426, 384639, 512852, 769278, 897491, 1025704, 1538556, 1794982, 2692473, 3077112, 3589964, 5384946, 7179928, 10769892, 21539784]

約数ペア:

[(1, 21539784), (2, 10769892), (3, 7179928), (4, 5384946), (6, 3589964), (7, 3077112), (8, 2692473), (12, 1794982), (14, 1538556), (21, 1025704), (24, 897491), (28, 769278), (42, 512852), (56, 384639), (84, 256426), (168, 128213)]