128645728

素因数分解:

$2^5\times {\mathrm{197}}^1\times {\mathrm{20407}}^1$

素因数の和:20614

約数の個数: 24

約数和(自身を含む): 254569392

約数和(自身を除く): 125923664

約数列:

[1, 2, 4, 8, 16, 32, 197, 394, 788, 1576, 3152, 6304, 20407, 40814, 81628, 163256, 326512, 653024, 4020179, 8040358, 16080716, 32161432, 64322864, 128645728]

約数ペア:

[(1, 128645728), (2, 64322864), (4, 32161432), (8, 16080716), (16, 8040358), (32, 4020179), (197, 653024), (394, 326512), (788, 163256), (1576, 81628), (3152, 40814), (6304, 20407)]