20375215

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 8931665

約数列:

[1, 5, 7, 31, 35, 89, 155, 211, 217, 445, 623, 1055, 1085, 1477, 2759, 3115, 6541, 7385, 13795, 18779, 19313, 32705, 45787, 93895, 96565, 131453, 228935, 582149, 657265, 2910745, 4075043, 20375215]

約数ペア:

[(1, 20375215), (5, 4075043), (7, 2910745), (31, 657265), (35, 582149), (89, 228935), (155, 131453), (211, 96565), (217, 93895), (445, 45787), (623, 32705), (1055, 19313), (1085, 18779), (1477, 13795), (2759, 7385), (3115, 6541)]