18868142

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{9539}}^1$

素因数の和:9607

約数の個数: 16

約数和(自身を含む): 30222720

約数和(自身を除く): 11354578

約数列:

[1, 2, 23, 43, 46, 86, 989, 1978, 9539, 19078, 219397, 410177, 438794, 820354, 9434071, 18868142]

約数ペア:

[(1, 18868142), (2, 9434071), (23, 820354), (43, 438794), (46, 410177), (86, 219397), (989, 19078), (1978, 9539)]