19949916

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{541}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 53419520

約数和(自身を除く): 33469604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 439, 541, 878, 1082, 1317, 1623, 1756, 2164, 2634, 3073, 3246, 3787, 5268, 6146, 6492, 7574, 9219, 11361, 12292, 15148, 18438, 22722, 36876, 45444, 237499, 474998, 712497, 949996, 1424994, 1662493, 2849988, 3324986, 4987479, 6649972, 9974958, 19949916]

約数ペア:

[(1, 19949916), (2, 9974958), (3, 6649972), (4, 4987479), (6, 3324986), (7, 2849988), (12, 1662493), (14, 1424994), (21, 949996), (28, 712497), (42, 474998), (84, 237499), (439, 45444), (541, 36876), (878, 22722), (1082, 18438), (1317, 15148), (1623, 12292), (1756, 11361), (2164, 9219), (2634, 7574), (3073, 6492), (3246, 6146), (3787, 5268)]