6439960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1229}}^1$

素因数の和:1371

約数の個数: 32

約数和(自身を含む): 14612400

約数和(自身を除く): 8172440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1229, 1310, 2458, 2620, 4916, 5240, 6145, 9832, 12290, 24580, 49160, 160999, 321998, 643996, 804995, 1287992, 1609990, 3219980, 6439960]

約数ペア:

[(1, 6439960), (2, 3219980), (4, 1609990), (5, 1287992), (8, 804995), (10, 643996), (20, 321998), (40, 160999), (131, 49160), (262, 24580), (524, 12290), (655, 9832), (1048, 6145), (1229, 5240), (1310, 4916), (2458, 2620)]