18520905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 34933248

約数和(自身を除く): 16412343

約数列:

[1, 3, 5, 13, 15, 17, 37, 39, 51, 65, 85, 111, 151, 185, 195, 221, 255, 453, 481, 555, 629, 663, 755, 1105, 1443, 1887, 1963, 2265, 2405, 2567, 3145, 3315, 5587, 5889, 7215, 7701, 8177, 9435, 9815, 12835, 16761, 24531, 27935, 29445, 33371, 38505, 40885, 72631, 83805, 94979, 100113, 122655, 166855, 217893, 284937, 363155, 474895, 500565, 1089465, 1234727, 1424685, 3704181, 6173635, 18520905]

約数ペア:

[(1, 18520905), (3, 6173635), (5, 3704181), (13, 1424685), (15, 1234727), (17, 1089465), (37, 500565), (39, 474895), (51, 363155), (65, 284937), (85, 217893), (111, 166855), (151, 122655), (185, 100113), (195, 94979), (221, 83805), (255, 72631), (453, 40885), (481, 38505), (555, 33371), (629, 29445), (663, 27935), (755, 24531), (1105, 16761), (1443, 12835), (1887, 9815), (1963, 9435), (2265, 8177), (2405, 7701), (2567, 7215), (3145, 5889), (3315, 5587)]