20397388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{4253}}^1$

素因数の和:4377

約数の個数: 24

約数和(自身を含む): 39306960

約数和(自身を除く): 18909572

約数列:

[1, 2, 4, 11, 22, 44, 109, 218, 436, 1199, 2398, 4253, 4796, 8506, 17012, 46783, 93566, 187132, 463577, 927154, 1854308, 5099347, 10198694, 20397388]

約数ペア:

[(1, 20397388), (2, 10198694), (4, 5099347), (11, 1854308), (22, 927154), (44, 463577), (109, 187132), (218, 93566), (436, 46783), (1199, 17012), (2398, 8506), (4253, 4796)]