19998868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{673}}^1$

素因数の和:736

約数の個数: 48

約数和(自身を含む): 40763520

約数和(自身を除く): 20764652

約数列:

[1, 2, 4, 17, 19, 23, 34, 38, 46, 68, 76, 92, 323, 391, 437, 646, 673, 782, 874, 1292, 1346, 1564, 1748, 2692, 7429, 11441, 12787, 14858, 15479, 22882, 25574, 29716, 30958, 45764, 51148, 61916, 217379, 263143, 294101, 434758, 526286, 588202, 869516, 1052572, 1176404, 4999717, 9999434, 19998868]

約数ペア:

[(1, 19998868), (2, 9999434), (4, 4999717), (17, 1176404), (19, 1052572), (23, 869516), (34, 588202), (38, 526286), (46, 434758), (68, 294101), (76, 263143), (92, 217379), (323, 61916), (391, 51148), (437, 45764), (646, 30958), (673, 29716), (782, 25574), (874, 22882), (1292, 15479), (1346, 14858), (1564, 12787), (1748, 11441), (2692, 7429)]