80763640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19991}}^1$

素因数の和:20103

約数の個数: 32

約数和(自身を含む): 183526560

約数和(自身を除く): 102762920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 19991, 39982, 79964, 99955, 159928, 199910, 399820, 799640, 2019091, 4038182, 8076364, 10095455, 16152728, 20190910, 40381820, 80763640]

約数ペア:

[(1, 80763640), (2, 40381820), (4, 20190910), (5, 16152728), (8, 10095455), (10, 8076364), (20, 4038182), (40, 2019091), (101, 799640), (202, 399820), (404, 199910), (505, 159928), (808, 99955), (1010, 79964), (2020, 39982), (4040, 19991)]