679960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 1555200

約数和(自身を除く): 875240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 191, 356, 382, 445, 712, 764, 890, 955, 1528, 1780, 1910, 3560, 3820, 7640, 16999, 33998, 67996, 84995, 135992, 169990, 339980, 679960]

約数ペア:

[(1, 679960), (2, 339980), (4, 169990), (5, 135992), (8, 84995), (10, 67996), (20, 33998), (40, 16999), (89, 7640), (178, 3820), (191, 3560), (356, 1910), (382, 1780), (445, 1528), (712, 955), (764, 890)]