20369055

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19029345

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 49, 105, 107, 111, 147, 185, 245, 259, 321, 343, 535, 555, 735, 749, 777, 1029, 1295, 1605, 1715, 1813, 2247, 3745, 3885, 3959, 5145, 5243, 5439, 9065, 11235, 11877, 12691, 15729, 19795, 26215, 27195, 27713, 36701, 38073, 59385, 63455, 78645, 83139, 110103, 138565, 183505, 190365, 193991, 415695, 550515, 581973, 969955, 1357937, 2909865, 4073811, 6789685, 20369055]

約数ペア:

[(1, 20369055), (3, 6789685), (5, 4073811), (7, 2909865), (15, 1357937), (21, 969955), (35, 581973), (37, 550515), (49, 415695), (105, 193991), (107, 190365), (111, 183505), (147, 138565), (185, 110103), (245, 83139), (259, 78645), (321, 63455), (343, 59385), (535, 38073), (555, 36701), (735, 27713), (749, 27195), (777, 26215), (1029, 19795), (1295, 15729), (1605, 12691), (1715, 11877), (1813, 11235), (2247, 9065), (3745, 5439), (3885, 5243), (3959, 5145)]