19955504

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{4969}}^1$

素因数の和:5228

約数の個数: 20

約数和(自身を含む): 38825640

約数和(自身を除く): 18870136

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 4969, 9938, 19876, 39752, 79504, 1247219, 2494438, 4988876, 9977752, 19955504]

約数ペア:

[(1, 19955504), (2, 9977752), (4, 4988876), (8, 2494438), (16, 1247219), (251, 79504), (502, 39752), (1004, 19876), (2008, 9938), (4016, 4969)]