18988178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{23327}}^1$

素因数の和:23377

約数の個数: 16

約数和(自身を含む): 31912704

約数和(自身を除く): 12924526

約数列:

[1, 2, 11, 22, 37, 74, 407, 814, 23327, 46654, 256597, 513194, 863099, 1726198, 9494089, 18988178]

約数ペア:

[(1, 18988178), (2, 9494089), (11, 1726198), (22, 863099), (37, 513194), (74, 256597), (407, 46654), (814, 23327)]