79223440

素因数分解:

$2^4\times 5^1\times {\mathrm{990293}}^1$

素因数の和:990306

約数の個数: 20

約数和(自身を含む): 184194684

約数和(自身を除く): 104971244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 990293, 1980586, 3961172, 4951465, 7922344, 9902930, 15844688, 19805860, 39611720, 79223440]

約数ペア:

[(1, 79223440), (2, 39611720), (4, 19805860), (5, 15844688), (8, 9902930), (10, 7922344), (16, 4951465), (20, 3961172), (40, 1980586), (80, 990293)]