19949517

素因数分解:

$3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{887}}^1$

素因数の和:927

約数の個数: 48

約数和(自身を含む): 36443520

約数和(自身を除く): 16494003

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 119, 147, 153, 189, 357, 441, 459, 833, 887, 1071, 1323, 2499, 2661, 3213, 6209, 7497, 7983, 15079, 18627, 22491, 23949, 43463, 45237, 55881, 105553, 130389, 135711, 167643, 316659, 391167, 407133, 738871, 949977, 1173501, 2216613, 2849931, 6649839, 19949517]

約数ペア:

[(1, 19949517), (3, 6649839), (7, 2849931), (9, 2216613), (17, 1173501), (21, 949977), (27, 738871), (49, 407133), (51, 391167), (63, 316659), (119, 167643), (147, 135711), (153, 130389), (189, 105553), (357, 55881), (441, 45237), (459, 43463), (833, 23949), (887, 22491), (1071, 18627), (1323, 15079), (2499, 7983), (2661, 7497), (3213, 6209)]