18811216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61879}}^1$

素因数の和:61906

約数の個数: 20

約数和(自身を含む): 38365600

約数和(自身を除く): 19554384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 61879, 123758, 247516, 495032, 990064, 1175701, 2351402, 4702804, 9405608, 18811216]

約数ペア:

[(1, 18811216), (2, 9405608), (4, 4702804), (8, 2351402), (16, 1175701), (19, 990064), (38, 495032), (76, 247516), (152, 123758), (304, 61879)]