26639960

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1039}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 60091200

約数和(自身を除く): 33451240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1039, 1282, 2078, 2564, 3205, 4156, 5128, 5195, 6410, 8312, 10390, 12820, 20780, 25640, 41560, 665999, 1331998, 2663996, 3329995, 5327992, 6659990, 13319980, 26639960]

約数ペア:

[(1, 26639960), (2, 13319980), (4, 6659990), (5, 5327992), (8, 3329995), (10, 2663996), (20, 1331998), (40, 665999), (641, 41560), (1039, 25640), (1282, 20780), (2078, 12820), (2564, 10390), (3205, 8312), (4156, 6410), (5128, 5195)]