719120

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 40

約数和(自身を含む): 1707480

約数和(自身を除く): 988360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 101, 178, 202, 356, 404, 445, 505, 712, 808, 890, 1010, 1424, 1616, 1780, 2020, 3560, 4040, 7120, 8080, 8989, 17978, 35956, 44945, 71912, 89890, 143824, 179780, 359560, 719120]

約数ペア:

[(1, 719120), (2, 359560), (4, 179780), (5, 143824), (8, 89890), (10, 71912), (16, 44945), (20, 35956), (40, 17978), (80, 8989), (89, 8080), (101, 7120), (178, 4040), (202, 3560), (356, 2020), (404, 1780), (445, 1616), (505, 1424), (712, 1010), (808, 890)]