19985229

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 33606144

約数和(自身を除く): 13620915

約数列:

[1, 3, 9, 11, 23, 33, 67, 69, 99, 131, 201, 207, 253, 393, 603, 737, 759, 1179, 1441, 1541, 2211, 2277, 3013, 4323, 4623, 6633, 8777, 9039, 12969, 13869, 16951, 26331, 27117, 33143, 50853, 78993, 96547, 99429, 152559, 201871, 289641, 298287, 605613, 868923, 1816839, 2220581, 6661743, 19985229]

約数ペア:

[(1, 19985229), (3, 6661743), (9, 2220581), (11, 1816839), (23, 868923), (33, 605613), (67, 298287), (69, 289641), (99, 201871), (131, 152559), (201, 99429), (207, 96547), (253, 78993), (393, 50853), (603, 33143), (737, 27117), (759, 26331), (1179, 16951), (1441, 13869), (1541, 12969), (2211, 9039), (2277, 8777), (3013, 6633), (4323, 4623)]