18216765

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:579

約数の個数: 64

約数和(自身を含む): 38085120

約数和(自身を除く): 19868355

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 37, 45, 63, 105, 111, 135, 185, 189, 259, 315, 333, 521, 555, 777, 945, 999, 1295, 1563, 1665, 2331, 2605, 3647, 3885, 4689, 4995, 6993, 7815, 10941, 11655, 14067, 18235, 19277, 23445, 32823, 34965, 54705, 57831, 70335, 96385, 98469, 134939, 164115, 173493, 289155, 404817, 492345, 520479, 674695, 867465, 1214451, 2024085, 2602395, 3643353, 6072255, 18216765]

約数ペア:

[(1, 18216765), (3, 6072255), (5, 3643353), (7, 2602395), (9, 2024085), (15, 1214451), (21, 867465), (27, 674695), (35, 520479), (37, 492345), (45, 404817), (63, 289155), (105, 173493), (111, 164115), (135, 134939), (185, 98469), (189, 96385), (259, 70335), (315, 57831), (333, 54705), (521, 34965), (555, 32823), (777, 23445), (945, 19277), (999, 18235), (1295, 14067), (1563, 11655), (1665, 10941), (2331, 7815), (2605, 6993), (3647, 4995), (3885, 4689)]