201798920

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{25609}}^1$

素因数の和:25817

約数の個数: 32

約数和(自身を含む): 456370200

約数和(自身を除く): 254571280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 25609, 51218, 102436, 128045, 204872, 256090, 512180, 1024360, 5044973, 10089946, 20179892, 25224865, 40359784, 50449730, 100899460, 201798920]

約数ペア:

[(1, 201798920), (2, 100899460), (4, 50449730), (5, 40359784), (8, 25224865), (10, 20179892), (20, 10089946), (40, 5044973), (197, 1024360), (394, 512180), (788, 256090), (985, 204872), (1576, 128045), (1970, 102436), (3940, 51218), (7880, 25609)]