19847780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2749}}^1$

素因数の和:2796

約数の個数: 36

約数和(自身を含む): 44005500

約数和(自身を除く): 24157720

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2749, 3610, 5498, 7220, 10996, 13745, 27490, 52231, 54980, 104462, 208924, 261155, 522310, 992389, 1044620, 1984778, 3969556, 4961945, 9923890, 19847780]

約数ペア:

[(1, 19847780), (2, 9923890), (4, 4961945), (5, 3969556), (10, 1984778), (19, 1044620), (20, 992389), (38, 522310), (76, 261155), (95, 208924), (190, 104462), (361, 54980), (380, 52231), (722, 27490), (1444, 13745), (1805, 10996), (2749, 7220), (3610, 5498)]