18757720

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4643}}^1$

素因数の和:4755

約数の個数: 32

約数和(自身を含む): 42631920

約数和(自身を除く): 23874200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4643, 9286, 18572, 23215, 37144, 46430, 92860, 185720, 468943, 937886, 1875772, 2344715, 3751544, 4689430, 9378860, 18757720]

約数ペア:

[(1, 18757720), (2, 9378860), (4, 4689430), (5, 3751544), (8, 2344715), (10, 1875772), (20, 937886), (40, 468943), (101, 185720), (202, 92860), (404, 46430), (505, 37144), (808, 23215), (1010, 18572), (2020, 9286), (4040, 4643)]