81540836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{4519}}^1$

素因数の和:4883

約数の個数: 24

約数和(自身を含む): 154150080

約数和(自身を除く): 72609244

約数列:

[1, 2, 4, 13, 26, 52, 347, 694, 1388, 4511, 4519, 9022, 9038, 18044, 18076, 58747, 117494, 234988, 1568093, 3136186, 6272372, 20385209, 40770418, 81540836]

約数ペア:

[(1, 81540836), (2, 40770418), (4, 20385209), (13, 6272372), (26, 3136186), (52, 1568093), (347, 234988), (694, 117494), (1388, 58747), (4511, 18076), (4519, 18044), (9022, 9038)]