21760785

素因数分解:

$3^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 17119215

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 359, 449, 1077, 1347, 1795, 2245, 3231, 4041, 5385, 6735, 9693, 12123, 16155, 20205, 48465, 60615, 161191, 483573, 805955, 1450719, 2417865, 4352157, 7253595, 21760785]

約数ペア:

[(1, 21760785), (3, 7253595), (5, 4352157), (9, 2417865), (15, 1450719), (27, 805955), (45, 483573), (135, 161191), (359, 60615), (449, 48465), (1077, 20205), (1347, 16155), (1795, 12123), (2245, 9693), (3231, 6735), (4041, 5385)]