280492040

素因数分解:

$2^3\times 5^1\times {\mathrm{2579}}^1\times {\mathrm{2719}}^1$

素因数の和:5309

約数の個数: 32

約数和(自身を含む): 631584000

約数和(自身を除く): 351091960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2579, 2719, 5158, 5438, 10316, 10876, 12895, 13595, 20632, 21752, 25790, 27190, 51580, 54380, 103160, 108760, 7012301, 14024602, 28049204, 35061505, 56098408, 70123010, 140246020, 280492040]

約数ペア:

[(1, 280492040), (2, 140246020), (4, 70123010), (5, 56098408), (8, 35061505), (10, 28049204), (20, 14024602), (40, 7012301), (2579, 108760), (2719, 103160), (5158, 54380), (5438, 51580), (10316, 27190), (10876, 25790), (12895, 21752), (13595, 20632)]