21175945

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 31057920

約数和(自身を除く): 9881975

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 673, 899, 1015, 1085, 3365, 4495, 4711, 6293, 19517, 20863, 23555, 31465, 97585, 104315, 136619, 146041, 605027, 683095, 730205, 3025135, 4235189, 21175945]

約数ペア:

[(1, 21175945), (5, 4235189), (7, 3025135), (29, 730205), (31, 683095), (35, 605027), (145, 146041), (155, 136619), (203, 104315), (217, 97585), (673, 31465), (899, 23555), (1015, 20863), (1085, 19517), (3365, 6293), (4495, 4711)]