80275540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{439}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 173859840

約数和(自身を除く): 93584300

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 223, 410, 439, 446, 820, 878, 892, 1115, 1756, 2195, 2230, 4390, 4460, 8780, 9143, 17999, 18286, 35998, 36572, 45715, 71996, 89995, 91430, 97897, 179990, 182860, 195794, 359980, 391588, 489485, 978970, 1957940, 4013777, 8027554, 16055108, 20068885, 40137770, 80275540]

約数ペア:

[(1, 80275540), (2, 40137770), (4, 20068885), (5, 16055108), (10, 8027554), (20, 4013777), (41, 1957940), (82, 978970), (164, 489485), (205, 391588), (223, 359980), (410, 195794), (439, 182860), (446, 179990), (820, 97897), (878, 91430), (892, 89995), (1115, 71996), (1756, 45715), (2195, 36572), (2230, 35998), (4390, 18286), (4460, 17999), (8780, 9143)]