19719370

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 40027680

約数和(自身を除く): 20308310

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 121, 215, 242, 379, 430, 473, 605, 758, 946, 1210, 1895, 2365, 3790, 4169, 4730, 5203, 8338, 10406, 16297, 20845, 26015, 32594, 41690, 45859, 52030, 81485, 91718, 162970, 179267, 229295, 358534, 458590, 896335, 1792670, 1971937, 3943874, 9859685, 19719370]

約数ペア:

[(1, 19719370), (2, 9859685), (5, 3943874), (10, 1971937), (11, 1792670), (22, 896335), (43, 458590), (55, 358534), (86, 229295), (110, 179267), (121, 162970), (215, 91718), (242, 81485), (379, 52030), (430, 45859), (473, 41690), (605, 32594), (758, 26015), (946, 20845), (1210, 16297), (1895, 10406), (2365, 8338), (3790, 5203), (4169, 4730)]