19911430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1361}}^1$

素因数の和:1405

約数の個数: 64

約数和(自身を含む): 47070720

約数和(自身を除く): 27159290

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 55, 70, 77, 95, 110, 133, 154, 190, 209, 266, 385, 418, 665, 770, 1045, 1330, 1361, 1463, 2090, 2722, 2926, 6805, 7315, 9527, 13610, 14630, 14971, 19054, 25859, 29942, 47635, 51718, 74855, 95270, 104797, 129295, 149710, 181013, 209594, 258590, 284449, 362026, 523985, 568898, 905065, 1047970, 1422245, 1810130, 1991143, 2844490, 3982286, 9955715, 19911430]

約数ペア:

[(1, 19911430), (2, 9955715), (5, 3982286), (7, 2844490), (10, 1991143), (11, 1810130), (14, 1422245), (19, 1047970), (22, 905065), (35, 568898), (38, 523985), (55, 362026), (70, 284449), (77, 258590), (95, 209594), (110, 181013), (133, 149710), (154, 129295), (190, 104797), (209, 95270), (266, 74855), (385, 51718), (418, 47635), (665, 29942), (770, 25859), (1045, 19054), (1330, 14971), (1361, 14630), (1463, 13610), (2090, 9527), (2722, 7315), (2926, 6805)]