20900008

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1171}}^1$

素因数の和:1297

約数の個数: 32

約数和(自身を含む): 41348160

約数和(自身を除く): 20448152

約数列:

[1, 2, 4, 8, 23, 46, 92, 97, 184, 194, 388, 776, 1171, 2231, 2342, 4462, 4684, 8924, 9368, 17848, 26933, 53866, 107732, 113587, 215464, 227174, 454348, 908696, 2612501, 5225002, 10450004, 20900008]

約数ペア:

[(1, 20900008), (2, 10450004), (4, 5225002), (8, 2612501), (23, 908696), (46, 454348), (92, 227174), (97, 215464), (184, 113587), (194, 107732), (388, 53866), (776, 26933), (1171, 17848), (2231, 9368), (2342, 8924), (4462, 4684)]