639377982

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{320009}}^1$

素因数の和:320057

約数の個数: 32

約数和(自身を含む): 1459245600

約数和(自身を除く): 819867618

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 333, 666, 999, 1998, 320009, 640018, 960027, 1920054, 2880081, 5760162, 8640243, 11840333, 17280486, 23680666, 35520999, 71041998, 106562997, 213125994, 319688991, 639377982]

約数ペア:

[(1, 639377982), (2, 319688991), (3, 213125994), (6, 106562997), (9, 71041998), (18, 35520999), (27, 23680666), (37, 17280486), (54, 11840333), (74, 8640243), (111, 5760162), (222, 2880081), (333, 1920054), (666, 960027), (999, 640018), (1998, 320009)]