19945408

素因数分解:

$2^6\times 7^1\times {\mathrm{211}}^2$

素因数の和:441

約数の個数: 42

約数和(自身を含む): 45448728

約数和(自身を除く): 25503320

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 211, 224, 422, 448, 844, 1477, 1688, 2954, 3376, 5908, 6752, 11816, 13504, 23632, 44521, 47264, 89042, 94528, 178084, 311647, 356168, 623294, 712336, 1246588, 1424672, 2493176, 2849344, 4986352, 9972704, 19945408]

約数ペア:

[(1, 19945408), (2, 9972704), (4, 4986352), (7, 2849344), (8, 2493176), (14, 1424672), (16, 1246588), (28, 712336), (32, 623294), (56, 356168), (64, 311647), (112, 178084), (211, 94528), (224, 89042), (422, 47264), (448, 44521), (844, 23632), (1477, 13504), (1688, 11816), (2954, 6752), (3376, 5908)]