21508988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7649}}^1$

素因数の和:7709

約数の個数: 24

約数和(自身を含む): 40698000

約数和(自身を除く): 19189012

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7649, 15298, 30596, 145331, 283013, 290662, 566026, 581324, 1132052, 5377247, 10754494, 21508988]

約数ペア:

[(1, 21508988), (2, 10754494), (4, 5377247), (19, 1132052), (37, 581324), (38, 566026), (74, 290662), (76, 283013), (148, 145331), (703, 30596), (1406, 15298), (2812, 7649)]