81950180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{315193}}^1$

素因数の和:315215

約数の個数: 24

約数和(自身を含む): 185334072

約数和(自身を除く): 103383892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 315193, 630386, 1260772, 1575965, 3151930, 4097509, 6303860, 8195018, 16390036, 20487545, 40975090, 81950180]

約数ペア:

[(1, 81950180), (2, 40975090), (4, 20487545), (5, 16390036), (10, 8195018), (13, 6303860), (20, 4097509), (26, 3151930), (52, 1575965), (65, 1260772), (130, 630386), (260, 315193)]