278520020

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{72911}}^1$

素因数の和:73111

約数の個数: 24

約数和(自身を含む): 587962368

約数和(自身を除く): 309442348

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 72911, 145822, 291644, 364555, 729110, 1458220, 13926001, 27852002, 55704004, 69630005, 139260010, 278520020]

約数ペア:

[(1, 278520020), (2, 139260010), (4, 69630005), (5, 55704004), (10, 27852002), (20, 13926001), (191, 1458220), (382, 729110), (764, 364555), (955, 291644), (1910, 145822), (3820, 72911)]