12879920

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1229}}^1$

素因数の和:1373

約数の個数: 40

約数和(自身を含む): 30198960

約数和(自身を除く): 17319040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1229, 1310, 2096, 2458, 2620, 4916, 5240, 6145, 9832, 10480, 12290, 19664, 24580, 49160, 98320, 160999, 321998, 643996, 804995, 1287992, 1609990, 2575984, 3219980, 6439960, 12879920]

約数ペア:

[(1, 12879920), (2, 6439960), (4, 3219980), (5, 2575984), (8, 1609990), (10, 1287992), (16, 804995), (20, 643996), (40, 321998), (80, 160999), (131, 98320), (262, 49160), (524, 24580), (655, 19664), (1048, 12290), (1229, 10480), (1310, 9832), (2096, 6145), (2458, 5240), (2620, 4916)]