19853444

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{683}}^1$

素因数の和:756

約数の個数: 36

約数和(自身を含む): 38552976

約数和(自身を除く): 18699532

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 676, 683, 1118, 1366, 2236, 2732, 7267, 8879, 14534, 17758, 29068, 29369, 35516, 58738, 115427, 117476, 230854, 381797, 461708, 763594, 1527188, 4963361, 9926722, 19853444]

約数ペア:

[(1, 19853444), (2, 9926722), (4, 4963361), (13, 1527188), (26, 763594), (43, 461708), (52, 381797), (86, 230854), (169, 117476), (172, 115427), (338, 58738), (559, 35516), (676, 29369), (683, 29068), (1118, 17758), (1366, 14534), (2236, 8879), (2732, 7267)]