20008216

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{947}}^1$

素因数の和:1111

約数の個数: 32

約数和(自身を含む): 39816000

約数和(自身を除く): 19807784

約数列:

[1, 2, 4, 8, 19, 38, 76, 139, 152, 278, 556, 947, 1112, 1894, 2641, 3788, 5282, 7576, 10564, 17993, 21128, 35986, 71972, 131633, 143944, 263266, 526532, 1053064, 2501027, 5002054, 10004108, 20008216]

約数ペア:

[(1, 20008216), (2, 10004108), (4, 5002054), (8, 2501027), (19, 1053064), (38, 526532), (76, 263266), (139, 143944), (152, 131633), (278, 71972), (556, 35986), (947, 21128), (1112, 17993), (1894, 10564), (2641, 7576), (3788, 5282)]