18117957

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 10549563

約数列:

[1, 3, 11, 13, 33, 39, 143, 157, 269, 429, 471, 807, 1727, 2041, 2959, 3497, 5181, 6123, 8877, 10491, 22451, 38467, 42233, 67353, 115401, 126699, 464563, 549029, 1393689, 1647087, 6039319, 18117957]

約数ペア:

[(1, 18117957), (3, 6039319), (11, 1647087), (13, 1393689), (33, 549029), (39, 464563), (143, 126699), (157, 115401), (269, 67353), (429, 42233), (471, 38467), (807, 22451), (1727, 10491), (2041, 8877), (2959, 6123), (3497, 5181)]