21206125750

素因数分解:

$2^1\times 5^3\times {\mathrm{659}}^1\times {\mathrm{128717}}^1$

素因数の和:129393

約数の個数: 32

約数和(自身を含む): 39758415840

約数和(自身を除く): 18552290090

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 659, 1318, 3295, 6590, 16475, 32950, 82375, 128717, 164750, 257434, 643585, 1287170, 3217925, 6435850, 16089625, 32179250, 84824503, 169649006, 424122515, 848245030, 2120612575, 4241225150, 10603062875, 21206125750]

約数ペア:

[(1, 21206125750), (2, 10603062875), (5, 4241225150), (10, 2120612575), (25, 848245030), (50, 424122515), (125, 169649006), (250, 84824503), (659, 32179250), (1318, 16089625), (3295, 6435850), (6590, 3217925), (16475, 1287170), (32950, 643585), (82375, 257434), (128717, 164750)]