21329935

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 8322545

約数列:

[1, 5, 11, 29, 43, 55, 145, 215, 311, 319, 473, 1247, 1555, 1595, 2365, 3421, 6235, 9019, 13373, 13717, 17105, 45095, 66865, 68585, 99209, 147103, 387817, 496045, 735515, 1939085, 4265987, 21329935]

約数ペア:

[(1, 21329935), (5, 4265987), (11, 1939085), (29, 735515), (43, 496045), (55, 387817), (145, 147103), (215, 99209), (311, 68585), (319, 66865), (473, 45095), (1247, 17105), (1555, 13717), (1595, 13373), (2365, 9019), (3421, 6235)]