18218235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 35758080

約数和(自身を除く): 17539845

約数列:

[1, 3, 5, 7, 15, 21, 29, 31, 35, 87, 93, 105, 145, 155, 193, 203, 217, 435, 465, 579, 609, 651, 899, 965, 1015, 1085, 1351, 2697, 2895, 3045, 3255, 4053, 4495, 5597, 5983, 6293, 6755, 13485, 16791, 17949, 18879, 20265, 27985, 29915, 31465, 39179, 41881, 83955, 89745, 94395, 117537, 125643, 173507, 195895, 209405, 520521, 587685, 628215, 867535, 1214549, 2602605, 3643647, 6072745, 18218235]

約数ペア:

[(1, 18218235), (3, 6072745), (5, 3643647), (7, 2602605), (15, 1214549), (21, 867535), (29, 628215), (31, 587685), (35, 520521), (87, 209405), (93, 195895), (105, 173507), (145, 125643), (155, 117537), (193, 94395), (203, 89745), (217, 83955), (435, 41881), (465, 39179), (579, 31465), (609, 29915), (651, 27985), (899, 20265), (965, 18879), (1015, 17949), (1085, 16791), (1351, 13485), (2697, 6755), (2895, 6293), (3045, 5983), (3255, 5597), (4053, 4495)]