81697900

素因数分解:

$2^2\times 5^2\times {\mathrm{439}}^1\times {\mathrm{1861}}^1$

素因数の和:2314

約数の個数: 36

約数和(自身を含む): 177783760

約数和(自身を除く): 96085860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 439, 878, 1756, 1861, 2195, 3722, 4390, 7444, 8780, 9305, 10975, 18610, 21950, 37220, 43900, 46525, 93050, 186100, 816979, 1633958, 3267916, 4084895, 8169790, 16339580, 20424475, 40848950, 81697900]

約数ペア:

[(1, 81697900), (2, 40848950), (4, 20424475), (5, 16339580), (10, 8169790), (20, 4084895), (25, 3267916), (50, 1633958), (100, 816979), (439, 186100), (878, 93050), (1756, 46525), (1861, 43900), (2195, 37220), (3722, 21950), (4390, 18610), (7444, 10975), (8780, 9305)]