20403928

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{23399}}^1$

素因数の和:23514

約数の個数: 16

約数和(自身を含む): 38610000

約数和(自身を除く): 18206072

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 23399, 46798, 93596, 187192, 2550491, 5100982, 10201964, 20403928]

約数ペア:

[(1, 20403928), (2, 10201964), (4, 5100982), (8, 2550491), (109, 187192), (218, 93596), (436, 46798), (872, 23399)]