21000608648

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138161899}}^1$

素因数の和:138161924

約数の個数: 16

約数和(自身を含む): 41448570000

約数和(自身を除く): 20447961352

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138161899, 276323798, 552647596, 1105295192, 2625076081, 5250152162, 10500304324, 21000608648]

約数ペア:

[(1, 21000608648), (2, 10500304324), (4, 5250152162), (8, 2625076081), (19, 1105295192), (38, 552647596), (76, 276323798), (152, 138161899)]