27721305

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 53498880

約数和(自身を除く): 25777575

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 47, 51, 85, 135, 141, 153, 235, 255, 257, 423, 459, 705, 765, 771, 799, 1269, 1285, 2115, 2295, 2313, 2397, 3855, 3995, 4369, 6345, 6939, 7191, 11565, 11985, 12079, 13107, 21573, 21845, 34695, 35955, 36237, 39321, 60395, 65535, 107865, 108711, 117963, 181185, 196605, 205343, 326133, 543555, 589815, 616029, 1026715, 1630665, 1848087, 3080145, 5544261, 9240435, 27721305]

約数ペア:

[(1, 27721305), (3, 9240435), (5, 5544261), (9, 3080145), (15, 1848087), (17, 1630665), (27, 1026715), (45, 616029), (47, 589815), (51, 543555), (85, 326133), (135, 205343), (141, 196605), (153, 181185), (235, 117963), (255, 108711), (257, 107865), (423, 65535), (459, 60395), (705, 39321), (765, 36237), (771, 35955), (799, 34695), (1269, 21845), (1285, 21573), (2115, 13107), (2295, 12079), (2313, 11985), (2397, 11565), (3855, 7191), (3995, 6939), (4369, 6345)]