27981405

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{463}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 52116480

約数和(自身を除く): 24135075

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 79, 85, 153, 237, 255, 395, 463, 711, 765, 1185, 1343, 1389, 2315, 3555, 4029, 4167, 6715, 6945, 7871, 12087, 20145, 20835, 23613, 36577, 39355, 60435, 70839, 109731, 118065, 182885, 329193, 354195, 548655, 621809, 1645965, 1865427, 3109045, 5596281, 9327135, 27981405]

約数ペア:

[(1, 27981405), (3, 9327135), (5, 5596281), (9, 3109045), (15, 1865427), (17, 1645965), (45, 621809), (51, 548655), (79, 354195), (85, 329193), (153, 182885), (237, 118065), (255, 109731), (395, 70839), (463, 60435), (711, 39355), (765, 36577), (1185, 23613), (1343, 20835), (1389, 20145), (2315, 12087), (3555, 7871), (4029, 6945), (4167, 6715)]