21865928

素因数分解:

$2^3\times 7^1\times {\mathrm{390463}}^1$

素因数の和:390476

約数の個数: 16

約数和(自身を含む): 46855680

約数和(自身を除く): 24989752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390463, 780926, 1561852, 2733241, 3123704, 5466482, 10932964, 21865928]

約数ペア:

[(1, 21865928), (2, 10932964), (4, 5466482), (7, 3123704), (8, 2733241), (14, 1561852), (28, 780926), (56, 390463)]