28578615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 53778816

約数和(自身を除く): 25200201

約数列:

[1, 3, 5, 13, 15, 17, 37, 39, 51, 65, 85, 111, 185, 195, 221, 233, 255, 481, 555, 629, 663, 699, 1105, 1165, 1443, 1887, 2405, 3029, 3145, 3315, 3495, 3961, 7215, 8177, 8621, 9087, 9435, 11883, 15145, 19805, 24531, 25863, 40885, 43105, 45435, 51493, 59415, 112073, 122655, 129315, 146557, 154479, 257465, 336219, 439671, 560365, 732785, 772395, 1681095, 1905241, 2198355, 5715723, 9526205, 28578615]

約数ペア:

[(1, 28578615), (3, 9526205), (5, 5715723), (13, 2198355), (15, 1905241), (17, 1681095), (37, 772395), (39, 732785), (51, 560365), (65, 439671), (85, 336219), (111, 257465), (185, 154479), (195, 146557), (221, 129315), (233, 122655), (255, 112073), (481, 59415), (555, 51493), (629, 45435), (663, 43105), (699, 40885), (1105, 25863), (1165, 24531), (1443, 19805), (1887, 15145), (2405, 11883), (3029, 9435), (3145, 9087), (3315, 8621), (3495, 8177), (3961, 7215)]