639780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{10663}}^1$

素因数の和:10675

約数の個数: 24

約数和(自身を含む): 1791552

約数和(自身を除く): 1151772

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 10663, 21326, 31989, 42652, 53315, 63978, 106630, 127956, 159945, 213260, 319890, 639780]

約数ペア:

[(1, 639780), (2, 319890), (3, 213260), (4, 159945), (5, 127956), (6, 106630), (10, 63978), (12, 53315), (15, 42652), (20, 31989), (30, 21326), (60, 10663)]