131866640

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{12979}}^1$

素因数の和:13119

約数の個数: 40

約数和(自身を含む): 309027840

約数和(自身を除く): 177161200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 12979, 25958, 51916, 64895, 103832, 129790, 207664, 259580, 519160, 1038320, 1648333, 3296666, 6593332, 8241665, 13186664, 16483330, 26373328, 32966660, 65933320, 131866640]

約数ペア:

[(1, 131866640), (2, 65933320), (4, 32966660), (5, 26373328), (8, 16483330), (10, 13186664), (16, 8241665), (20, 6593332), (40, 3296666), (80, 1648333), (127, 1038320), (254, 519160), (508, 259580), (635, 207664), (1016, 129790), (1270, 103832), (2032, 64895), (2540, 51916), (5080, 25958), (10160, 12979)]