21770864

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6907}}^1$

素因数の和:7112

約数の個数: 20

約数和(自身を含む): 42401304

約数和(自身を除く): 20630440

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6907, 13814, 27628, 55256, 110512, 1360679, 2721358, 5442716, 10885432, 21770864]

約数ペア:

[(1, 21770864), (2, 10885432), (4, 5442716), (8, 2721358), (16, 1360679), (197, 110512), (394, 55256), (788, 27628), (1576, 13814), (3152, 6907)]