20205885

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 38676096

約数和(自身を除く): 18470211

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 49, 105, 111, 147, 185, 245, 259, 555, 735, 743, 777, 1295, 1813, 2229, 3715, 3885, 5201, 5439, 9065, 11145, 15603, 26005, 27195, 27491, 36407, 78015, 82473, 109221, 137455, 182035, 192437, 412365, 546105, 577311, 962185, 1347059, 2886555, 4041177, 6735295, 20205885]

約数ペア:

[(1, 20205885), (3, 6735295), (5, 4041177), (7, 2886555), (15, 1347059), (21, 962185), (35, 577311), (37, 546105), (49, 412365), (105, 192437), (111, 182035), (147, 137455), (185, 109221), (245, 82473), (259, 78015), (555, 36407), (735, 27491), (743, 27195), (777, 26005), (1295, 15603), (1813, 11145), (2229, 9065), (3715, 5439), (3885, 5201)]