80394470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19949}}^1$

素因数の和:20000

約数の個数: 32

約数和(自身を含む): 160876800

約数和(自身を除く): 80482330

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 19949, 39898, 99745, 199490, 259337, 518674, 618419, 1236838, 1296685, 2593370, 3092095, 6184190, 8039447, 16078894, 40197235, 80394470]

約数ペア:

[(1, 80394470), (2, 40197235), (5, 16078894), (10, 8039447), (13, 6184190), (26, 3092095), (31, 2593370), (62, 1296685), (65, 1236838), (130, 618419), (155, 518674), (310, 259337), (403, 199490), (806, 99745), (2015, 39898), (4030, 19949)]