20315745

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2467}}^1$

素因数の和:2542

約数の個数: 32

約数和(自身を含む): 36723840

約数和(自身を除く): 16408095

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2467, 2745, 7401, 8235, 12335, 22203, 37005, 66609, 111015, 150487, 333045, 451461, 752435, 1354383, 2257305, 4063149, 6771915, 20315745]

約数ペア:

[(1, 20315745), (3, 6771915), (5, 4063149), (9, 2257305), (15, 1354383), (27, 752435), (45, 451461), (61, 333045), (135, 150487), (183, 111015), (305, 66609), (549, 37005), (915, 22203), (1647, 12335), (2467, 8235), (2745, 7401)]