21823155

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 42353280

約数和(自身を除く): 20530125

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 85, 111, 135, 153, 185, 255, 257, 333, 459, 555, 629, 765, 771, 999, 1285, 1665, 1887, 2295, 2313, 3145, 3855, 4369, 4995, 5661, 6939, 9435, 9509, 11565, 13107, 16983, 21845, 28305, 28527, 34695, 39321, 47545, 65535, 84915, 85581, 117963, 142635, 161653, 196605, 256743, 427905, 484959, 589815, 808265, 1283715, 1454877, 2424795, 4364631, 7274385, 21823155]

約数ペア:

[(1, 21823155), (3, 7274385), (5, 4364631), (9, 2424795), (15, 1454877), (17, 1283715), (27, 808265), (37, 589815), (45, 484959), (51, 427905), (85, 256743), (111, 196605), (135, 161653), (153, 142635), (185, 117963), (255, 85581), (257, 84915), (333, 65535), (459, 47545), (555, 39321), (629, 34695), (765, 28527), (771, 28305), (999, 21845), (1285, 16983), (1665, 13107), (1887, 11565), (2295, 9509), (2313, 9435), (3145, 6939), (3855, 5661), (4369, 4995)]