28106865

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 54501120

約数和(自身を除く): 26394255

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 85, 111, 135, 153, 185, 255, 331, 333, 459, 555, 629, 765, 993, 999, 1655, 1665, 1887, 2295, 2979, 3145, 4965, 4995, 5627, 5661, 8937, 9435, 12247, 14895, 16881, 16983, 28135, 28305, 36741, 44685, 50643, 61235, 84405, 84915, 110223, 151929, 183705, 208199, 253215, 330669, 551115, 624597, 759645, 1040995, 1653345, 1873791, 3122985, 5621373, 9368955, 28106865]

約数ペア:

[(1, 28106865), (3, 9368955), (5, 5621373), (9, 3122985), (15, 1873791), (17, 1653345), (27, 1040995), (37, 759645), (45, 624597), (51, 551115), (85, 330669), (111, 253215), (135, 208199), (153, 183705), (185, 151929), (255, 110223), (331, 84915), (333, 84405), (459, 61235), (555, 50643), (629, 44685), (765, 36741), (993, 28305), (999, 28135), (1655, 16983), (1665, 16881), (1887, 14895), (2295, 12247), (2979, 9435), (3145, 8937), (4965, 5661), (4995, 5627)]