191919

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:79

約数の個数: 32

約数和(自身を含む): 340480

約数和(自身を除く): 148561

約数列:

[1, 3, 7, 13, 19, 21, 37, 39, 57, 91, 111, 133, 247, 259, 273, 399, 481, 703, 741, 777, 1443, 1729, 2109, 3367, 4921, 5187, 9139, 10101, 14763, 27417, 63973, 191919]

約数ペア:

[(1, 191919), (3, 63973), (7, 27417), (13, 14763), (19, 10101), (21, 9139), (37, 5187), (39, 4921), (57, 3367), (91, 2109), (111, 1729), (133, 1443), (247, 777), (259, 741), (273, 703), (399, 481)]