20328957

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 34774272

約数和(自身を除く): 14445315

約数列:

[1, 3, 9, 11, 17, 33, 47, 51, 99, 141, 153, 187, 257, 423, 517, 561, 771, 799, 1551, 1683, 2313, 2397, 2827, 4369, 4653, 7191, 8481, 8789, 12079, 13107, 25443, 26367, 36237, 39321, 48059, 79101, 108711, 132869, 144177, 205343, 398607, 432531, 616029, 1195821, 1848087, 2258773, 6776319, 20328957]

約数ペア:

[(1, 20328957), (3, 6776319), (9, 2258773), (11, 1848087), (17, 1195821), (33, 616029), (47, 432531), (51, 398607), (99, 205343), (141, 144177), (153, 132869), (187, 108711), (257, 79101), (423, 48059), (517, 39321), (561, 36237), (771, 26367), (799, 25443), (1551, 13107), (1683, 12079), (2313, 8789), (2397, 8481), (2827, 7191), (4369, 4653)]