20717991609

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{318557}}^1$

素因数の和:318749

約数の個数: 32

約数和(自身を含む): 33435847680

約数和(自身を除く): 12717856071

約数列:

[1, 3, 7, 19, 21, 57, 133, 163, 399, 489, 1141, 3097, 3423, 9291, 21679, 65037, 318557, 955671, 2229899, 6052583, 6689697, 18157749, 42368081, 51924791, 127104243, 155774373, 363473537, 986571029, 1090420611, 2959713087, 6905997203, 20717991609]

約数ペア:

[(1, 20717991609), (3, 6905997203), (7, 2959713087), (19, 1090420611), (21, 986571029), (57, 363473537), (133, 155774373), (163, 127104243), (399, 51924791), (489, 42368081), (1141, 18157749), (3097, 6689697), (3423, 6052583), (9291, 2229899), (21679, 955671), (65037, 318557)]