1625778820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1\times {\mathrm{2069}}^1$

素因数の和:2568

約数の個数: 48

約数和(自身を含む): 3458473200

約数和(自身を除く): 1832694380

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 389, 404, 505, 778, 1010, 1556, 1945, 2020, 2069, 3890, 4138, 7780, 8276, 10345, 20690, 39289, 41380, 78578, 157156, 196445, 208969, 392890, 417938, 785780, 804841, 835876, 1044845, 1609682, 2089690, 3219364, 4024205, 4179380, 8048410, 16096820, 81288941, 162577882, 325155764, 406444705, 812889410, 1625778820]

約数ペア:

[(1, 1625778820), (2, 812889410), (4, 406444705), (5, 325155764), (10, 162577882), (20, 81288941), (101, 16096820), (202, 8048410), (389, 4179380), (404, 4024205), (505, 3219364), (778, 2089690), (1010, 1609682), (1556, 1044845), (1945, 835876), (2020, 804841), (2069, 785780), (3890, 417938), (4138, 392890), (7780, 208969), (8276, 196445), (10345, 157156), (20690, 78578), (39289, 41380)]