668319355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{6869}}^1$

素因数の和:6975

約数の個数: 32

約数和(自身を含む): 920030400

約数和(自身を除く): 251711045

約数列:

[1, 5, 11, 29, 55, 61, 145, 305, 319, 671, 1595, 1769, 3355, 6869, 8845, 19459, 34345, 75559, 97295, 199201, 377795, 419009, 996005, 2095045, 2191211, 4609099, 10956055, 12151261, 23045495, 60756305, 133663871, 668319355]

約数ペア:

[(1, 668319355), (5, 133663871), (11, 60756305), (29, 23045495), (55, 12151261), (61, 10956055), (145, 4609099), (305, 2191211), (319, 2095045), (671, 996005), (1595, 419009), (1769, 377795), (3355, 199201), (6869, 97295), (8845, 75559), (19459, 34345)]