20100825

素因数分解:

$3^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 37428160

約数和(自身を除く): 17327335

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 97, 135, 225, 291, 307, 485, 675, 873, 921, 1455, 1535, 2425, 2619, 2763, 4365, 4605, 7275, 7675, 8289, 13095, 13815, 21825, 23025, 29779, 41445, 65475, 69075, 89337, 148895, 207225, 268011, 446685, 744475, 804033, 1340055, 2233425, 4020165, 6700275, 20100825]

約数ペア:

[(1, 20100825), (3, 6700275), (5, 4020165), (9, 2233425), (15, 1340055), (25, 804033), (27, 744475), (45, 446685), (75, 268011), (97, 207225), (135, 148895), (225, 89337), (291, 69075), (307, 65475), (485, 41445), (675, 29779), (873, 23025), (921, 21825), (1455, 13815), (1535, 13095), (2425, 8289), (2619, 7675), (2763, 7275), (4365, 4605)]